Merge r1619297, r1621806 from trunk:

Missing va_end spotted by cppcheck

Silent some cppcheck warnings.
Submitted by: jailletc36
Reviewed/backported by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1627747 13f79535-47bb-0310-9956-ffa450edef68