Fix [#37160] Rotate edge direction changed between 2.64 and 2.65 (low priority)

Easy to fix, but do not really understand *why* this is needed...

git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk@60876 954f8c5b-7b00-dc11-b283-0030488c597c