Fix a cosmetic problem with mod_include. Non-existant SSI vars

used to appear as '(none', without the closing paren.
Submitted by:	G�nter Knauf <eflash@gmx.net>


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@89651 13f79535-47bb-0310-9956-ffa450edef68