Fix "==" operator broken in r1045.

This fixes scripts that compare a condition's return value using equality,
e.g., pet.Health() == 0.

git-svn-id: svn+ssh://svn.curseforge.net/wow/ovale/mainline/trunk@1129 d5049fe3-3747-40f7-a4b5-f36d6801af5f