Drop leftover useless null checks. (now joining the club of people doing pointless commits ...)

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1620848 13f79535-47bb-0310-9956-ffa450edef68
Simplify.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1620849 13f79535-47bb-0310-9956-ffa450edef68