ConfigureUser.doDelete throws NPE if the user does not exist

java.lang.NullPointerException
	at com.atlassian.bamboo.ww2.actions.admin.user.ConfigureUser.doDelete(ConfigureUser.java:190)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at com.opensymphony.xwork.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:358)
	at com.opensymphony.xwork.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:218)
	at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:192)
	at com.opensymphony.xwork.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:88)
	at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
	at com.opensymphony.xwork.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:88)
	at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
	at com.atlassian.bamboo.ww2.interceptors.JSONValidationInterceptor.intercept(JSONValidationInterceptor.java:78)
	at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
	at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:31)
	at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
	at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:31)
	at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
	at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:31)
	at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
	at com.opensymphony.webwork.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:174)
	at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
	at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:31)
	at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
	at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:31)
	at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
	at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:31)
	at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
	at com.opensymphony.xwork.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:151)
	at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
	at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:31)
	at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
	at com.atlassian.bamboo.ww2.interceptors.GlobalAdminInterceptor.intercept(GlobalAdminInterceptor.java:21)
	at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
	at com.atlassian.bamboo.security.acegi.intercept.web.WebworkSecurityInterceptor.intercept(WebworkSecurityInterceptor.java:54)
	at com.atlassian.bamboo.security.acegi.intercept.web.WebworkSecurityInterceptorProxy.intercept(WebworkSecurityInterceptorProxy.java:30)
	at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
	at com.atlassian.bamboo.ww2.interceptors.PaginationAwareInterceptor.intercept(PaginationAwareInterceptor.java:100)
	at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
	at com.atlassian.bamboo.ww2.interceptors.StatisticsAwareInterceptor.intercept(StatisticsAwareInterceptor.java:42)
	at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
	at com.atlassian.bamboo.ww2.interceptors.ResultsListAwareInterceptor.intercept(ResultsListAwareInterceptor.java:45)
	at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
	at com.atlassian.bamboo.ww2.interceptors.NavigationAwareInterceptor.intercept(NavigationAwareInterceptor.java:97)
	at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
	at com.atlassian.bamboo.ww2.interceptors.BuildResultsSummaryAwareInteceptor.intercept(BuildResultsSummaryAwareInteceptor.java:66)
	at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
	at com.atlassian.bamboo.ww2.interceptors.ResultsSummaryAwareInteceptor.intercept(ResultsSummaryAwareInteceptor.java:74)
	at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
	at com.atlassian.bamboo.ww2.interceptors.ChainAwareInterceptor.intercept(ChainAwareInterceptor.java:112)
	at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
	at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:31)
	at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
	at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:31)
	at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
	at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:31)
	at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
	at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:31)
	at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
	at com.opensymphony.xwork.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:186)
	at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
	at com.opensymphony.xwork.DefaultActionProxy.execute(DefaultActionProxy.java:116)
	at com.opensymphony.webwork.dispatcher.DispatcherUtils.serviceAction(DispatcherUtils.java:274)
	at com.opensymphony.webwork.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:202)
	at com.atlassian.bamboo.ww2.BambooFilterDispatcher.doFilter(BambooFilterDispatcher.java:30)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:46)
	at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter$1.doFilter(DelegatingPluginFilter.java:66)
	at com.atlassian.applinks.core.rest.context.ContextFilter.doFilter(ContextFilter.java:25)
	at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter.doFilter(DelegatingPluginFilter.java:74)
	at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:42)
	at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter$1.doFilter(DelegatingPluginFilter.java:66)
	at com.atlassian.labs.httpservice.resource.ResourceFilter.doFilter(ResourceFilter.java:59)
	at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter.doFilter(DelegatingPluginFilter.java:74)
	at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:42)
	at com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:77)
	at com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:63)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at com.opensymphony.module.sitemesh.filter.PageFilter.parsePage(PageFilter.java:118)
	at com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(PageFilter.java:52)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at com.opensymphony.webwork.dispatcher.ActionContextCleanUp.doFilter(ActionContextCleanUp.java:88)