Make deletion of the copied WARs used for anti-resource locking more robust if the context fails to start (there were some circumstances where the original WAR could get deleted).

git-svn-id: https://svn.apache.org/repos/asf/tomcat/tc6.0.x/trunk@1484923 13f79535-47bb-0310-9956-ffa450edef68
Make deletion of the copied WARs used for anti-resource locking more robust if the context fails to start (there were some circumstances where the original WAR could get deleted).
(missed in previous commit)

git-svn-id: https://svn.apache.org/repos/asf/tomcat/tc6.0.x/trunk@1484924 13f79535-47bb-0310-9956-ffa450edef68