Fix Smoke Bomb when cast on the player

git-svn-id: http://svn.net-core.org/repos/t-engine4@2737 51575b47-30f0-44d4-a5cc-537603b46e54

game/engines/default/engine/interface/GameTargeting.lua

@@ -264,6 +264,6 @@ end
 -- This method should be called by your Player:setTarget() method, it will handle everything
 function _M:targetSetForPlayer(target)
 	self.target.target.entity = target
-	self.target.target.x = target.x
-	self.target.target.y = target.y
+	self.target.target.x = (type(target) == "table" and target.x) or nil
+	self.target.target.y = (type(target) == "table" and target.y) or nil
 end