Fix a typo in a comment.

PR:            7404 (which had a patch for the hostname lookup core dump
                    which was already fixed as well as this typo)
Submitted by:	Kunihiro Tanaka <tanaka@apache.or.jp>


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@88516 13f79535-47bb-0310-9956-ffa450edef68