Fix https://issues.apache.org/bugzilla/show_bug.cgi?id=47451 Don't trigger an NPE if headers with null or zero length name or set or if a null value is specified. Silently ignore any such calls in the same way the calls are ignored if the response has already been committed.
Fix https://issues.apache.org/bugzilla/show_bug.cgi?id=47451
Don't trigger an NPE if headers with null or zero length name or set or if a null value is specified. Silently ignore any such calls in the same way the calls are ignored if the response has already been committed.


git-svn-id: 79cef5a5a257cc9dbe40a45ac190115b4780e2d0@831774 13f79535-47bb-0310-9956-ffa450edef68

Nickname0806/Test_Q4,apache/tomcat,apache/tomcat,Nickname0806/Test_Q4,apache/tomcat,Nickname0806/Test_Q4,Nickname0806/Test_Q4,apache/tomcat,apache/tomcat