Fix DEBUG_CGI situation in mod_cgi.c

Submitted by: David MacKenzie <djm@va.pubnix.com>
Reviewed by: Ralf S. Engelschall


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@81021 13f79535-47bb-0310-9956-ffa450edef68