Fix undefined refrence in print_extended_project_browser.
This is a bit odd since it looks like it was a param variable, but never declared so it would always be 0. This mod should change how it works, just clean up the note.

git-svn-id: http://mantisbt.svn.sourceforge.net/svnroot/mantisbt/trunk@4855 <a class="text" href="/?p=mantisbt.git;a=object;h=f5dc347c">f5dc347c</a>-c33d-0410-90a0-b07cc1902cb9