Tables were added to the from list as well as the join list.
Only the join is needed in these cases.

git-svn-id: http://mantisbt.svn.sourceforge.net/svnroot/mantisbt/trunk@5153 <a class="text" href="/?p=mantisbt.git;a=object;h=f5dc347c">f5dc347c</a>-c33d-0410-90a0-b07cc1902cb9