Fix a potential segfault on all platforms. David Reid fixed this for

BEOS, but this could actually happen on any platform, so we should
be safe and protect ourselves.
Submitted by:	Cliff Woolley <cliffwoolley@yahoo.com>
Reviewed by:	Ryan Bloom


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@88080 13f79535-47bb-0310-9956-ffa450edef68