Fix error when running in strict servlet compliance mode with Java 5.
See "Tagging 6.0.39" thread on dev list.
By the way, it fixes https://issues.apache.org/bugzilla/show_bug.cgi?id=55166

git-svn-id: https://svn.apache.org/repos/asf/tomcat/tc6.0.x/trunk@1561625 13f79535-47bb-0310-9956-ffa450edef68