Fix https://issues.apache.org/bugzilla/show_bug.cgi?id=56399
Improve implementation of CoyoteAdapter.checkRecycled() to do not use an exception for flow control.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1595887 13f79535-47bb-0310-9956-ffa450edef68
Code clean-up. No functional change.
Merge exception handling blocks were code is identical.
Spotted while reviewing use of ExceptionUtils.unwrapInvocationTargetException()

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1595893 13f79535-47bb-0310-9956-ffa450edef68