Followup to r1590377
s/Wait/Waited/ and be more detailed

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1590402 13f79535-47bb-0310-9956-ffa450edef68
Review of r1590378:
Simplify: instanceof operator does not-null check

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1590403 13f79535-47bb-0310-9956-ffa450edef68