Reviewed by: Brian Behlendorf

Submitted by:	Tom Tromey (tromey@cygnus.com)

Fixes a core dump caused by failing to catch the lack of a properly-set
HTTP error code in CGI responses.  Sets those to "500".


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@76826 13f79535-47bb-0310-9956-ffa450edef68