Core: Get rid of dirty operator workaround for ACE_Singleton class implementation

--HG--
branch : trunk

src/server/game/AI/SmartScripts/SmartAI.cpp

@@ -147,7 +147,7 @@ bool SmartAI::LoadPath(uint32 entry)
 {
     if (HasEscortState(SMART_ESCORT_ESCORTING))
         return false;
-    mWayPoints = sSmartWaypointMgr.GetPath(entry);
+    mWayPoints = sSmartWaypointMgr->GetPath(entry);
     if (!mWayPoints)
     {
         GetScript()->SetPathId(0);