Core: Fixed uninitialized variable warnings

--HG--
branch : trunk

src/server/game/Scripting/MapScripts.cpp

@@ -828,7 +828,7 @@ void Map::ScriptsProcess()
                     break;
                 }
 
-                Creature* cTarget;
+                Creature* cTarget = NULL;
                 if (source) //using grid searcher
                 {
                     WorldObject* wSource = dynamic_cast <WorldObject*> (source);