Fix scripts without a '=' in the query string

(eg. http://host/cgi-bin/mycgi?foobar) to work.

PR: 1591
Obtained from:
Submitted by:
Reviewed by:	Ben Laurie, Jim Jagielski


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@79859 13f79535-47bb-0310-9956-ffa450edef68