[8182] Store and use Map* pointer in WorldObject instead map ids for speedup Author: Ambal

Also some code logic cleanups.
    Changes let make more cleanups in base map access and other places,
    but this chnages not inlcuded in patch.

*This patch may cause crash.

--HG--
branch : trunk

src/game/Level3.cpp

@@ -6206,7 +6206,7 @@ bool ChatHandler::HandleRespawnCommand(const char* /*args*/)
 
     TypeContainerVisitor<Trinity::WorldObjectWorker<Trinity::RespawnDo>, GridTypeMapContainer > obj_worker(worker);
     CellLock<GridReadGuard> cell_lock(cell, p);
-    cell_lock->Visit(cell_lock, obj_worker, *MapManager::Instance().GetMap(pl->GetMapId(), pl));
+    cell_lock->Visit(cell_lock, obj_worker, *pl->GetMap());
 
     return true;
 }