fix for 0005513: on close issue, don`t set resolution = resolve

• new resolution is lost change directly to "closed"

git-svn-id: http://mantisbt.svn.sourceforge.net/svnroot/mantisbt/trunk@3480 <a class="text" href="/?p=mantisbt.git;a=object;h=f5dc347c">f5dc347c</a>-c33d-0410-90a0-b07cc1902cb9