Fix a potential un-intialized variable usage warning.

This can not be a runtime ixsue, because, in such a case, we would assert and abort before.

 PR 59819.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1832317 13f79535-47bb-0310-9956-ffa450edef68