Avoid potential recursion on same path

2013-06-13 18:17:25,692 DEBUG [IncrementalPinger2 ] fisheye IndexingPingRequest-doRequest - Exception during FishEye Incremental Indexing of rocket: java.lang.StackOverflowError
java.lang.StackOverflowError
	at java.util.regex.Pattern$GroupTail.match(Pattern.java:4227)
	at java.util.regex.Pattern$GroupTail.match(Pattern.java:4227)
	at java.util.regex.Pattern$BranchConn.match(Pattern.java:4078)
	at java.util.regex.Pattern$Slice.match(Pattern.java:3482)
	at java.util.regex.Pattern$Branch.match(Pattern.java:4114)
	at java.util.regex.Pattern$GroupHead.match(Pattern.java:4168)
	at java.util.regex.Pattern$GroupTail.match(Pattern.java:4227)
	at java.util.regex.Pattern$BranchConn.match(Pattern.java:4078)
	at java.util.regex.Pattern$BmpCharProperty.match(Pattern.java:3366)
	at java.util.regex.Pattern$Branch.match(Pattern.java:4114)
	at java.util.regex.Pattern$GroupHead.match(Pattern.java:4168)
	at java.util.regex.Pattern$GroupHead.match(Pattern.java:4168)
	at java.util.regex.Pattern$NotBehind.match(Pattern.java:4714)
	at java.util.regex.Pattern$Curly.match0(Pattern.java:3782)
	at java.util.regex.Pattern$Curly.match(Pattern.java:3744)
	at java.util.regex.Pattern$GroupHead.match(Pattern.java:4168)
	at java.util.regex.Pattern$Loop.match(Pattern.java:4295)
	at java.util.regex.Pattern$GroupTail.match(Pattern.java:4227)
	at java.util.regex.Pattern$BmpCharProperty.match(Pattern.java:3366)
	at java.util.regex.Pattern$NotBehind.match(Pattern.java:4719)
	at java.util.regex.Pattern$Curly.match0(Pattern.java:3782)
	at java.util.regex.Pattern$Curly.match(Pattern.java:3744)
	at java.util.regex.Pattern$GroupHead.match(Pattern.java:4168)
	at java.util.regex.Pattern$Loop.matchInit(Pattern.java:4314)
	at java.util.regex.Pattern$Prolog.match(Pattern.java:4251)
	at java.util.regex.Pattern$GroupHead.match(Pattern.java:4168)
	at java.util.regex.Matcher.match(Matcher.java:1127)
	at java.util.regex.Matcher.lookingAt(Matcher.java:579)
	at com.cenqua.fisheye.svn.SvnPathRule.apply(SvnPathRule.java:85)
	at com.cenqua.fisheye.svn.SvnLogicalPathMatcher.findBestMatch(SvnLogicalPathMatcher.java:193)
	at com.cenqua.fisheye.svn.SvnLogicalPathMatcher.findBestMatch(SvnLogicalPathMatcher.java:171)
	at com.cenqua.fisheye.svn.SvnLogicalPathMatcher.getContainerId(SvnLogicalPathMatcher.java:240)
	at com.cenqua.fisheye.svn.SvnLogicalPathMatcher.isTag(SvnLogicalPathMatcher.java:256)
	at com.cenqua.fisheye.svn.SvnLogicalPathMatcher.getTagRoot(SvnLogicalPathMatcher.java:114)
	at com.atlassian.fisheye.svn.Svn2Cache.listDirs(Svn2Cache.java:135)
	at com.atlassian.fisheye.svn.Svn2AncestryProcessor.getLatestDirChangeUpto(Svn2AncestryProcessor.java:313)