First of a batch of possible 'performance' commits - mainly based on simplifying xdebug output

This is a fairly minor patch - removes a couple of extra sizeof calls

OLD:

Xdebug cumulative time for view_all_bug_page for 1 run: 12,957ms
Number of DB queries: 88
sizeof: 140 calls for 0.3s

NEW:

Xdebug cumulative time for view_all_bug_page for 1 run: 12,264ms
sizeof: 90 calls for 0.2s
Number of DB queries: 88

git-svn-id: http://mantisbt.svn.sourceforge.net/svnroot/mantisbt/trunk@3875 <a class="text" href="/?p=mantisbt.git;a=object;h=f5dc347c">f5dc347c</a>-c33d-0410-90a0-b07cc1902cb9