Avoid puking up stack traces when AMQ subscription is not found

2012-03-02 14:27:27,755 WARN [ActiveMQ Transport: tcp:///172.16.2.26:56801] [Service] Async error occurred: java.lang.IllegalArgumentException: The subscription does not exist: ID:slave07-59446-1329435608251-0:3:1:3985
java.lang.IllegalArgumentException: The subscription does not exist: ID:slave07-59446-1329435608251-0:3:1:3985
	at org.apache.activemq.broker.region.AbstractRegion.messagePull(AbstractRegion.java:389)
	at org.apache.activemq.broker.region.RegionBroker.messagePull(RegionBroker.java:552)
	at org.apache.activemq.broker.BrokerFilter.messagePull(BrokerFilter.java:81)
	at org.apache.activemq.broker.BrokerFilter.messagePull(BrokerFilter.java:81)
	at org.apache.activemq.broker.BrokerFilter.messagePull(BrokerFilter.java:81)
	at org.apache.activemq.broker.MutableBrokerFilter.messagePull(MutableBrokerFilter.java:245)
	at org.apache.activemq.broker.TransportConnection.processMessagePull(TransportConnection.java:474)
	at org.apache.activemq.command.MessagePull.visit(MessagePull.java:43)
	at org.apache.activemq.broker.TransportConnection.service(TransportConnection.java:311)
	at org.apache.activemq.broker.TransportConnection$1.onCommand(TransportConnection.java:185)
	at org.apache.activemq.transport.TransportFilter.onCommand(TransportFilter.java:69)
	at org.apache.activemq.transport.WireFormatNegotiator.onCommand(WireFormatNegotiator.java:113)
	at org.apache.activemq.transport.InactivityMonitor.onCommand(InactivityMonitor.java:228)
	at org.apache.activemq.transport.TransportSupport.doConsume(TransportSupport.java:83)
	at org.apache.activemq.transport.tcp.TcpTransport.doRun(TcpTransport.java:220)
	at org.apache.activemq.transport.tcp.TcpTransport.run(TcpTransport.java:202)
	at java.lang.Thread.run(Thread.java:619)