*Fix the bug that creatures do not return to spawn point when players leave instance.

--HG--
branch : trunk

src/game/ObjectGridLoader.cpp

@@ -283,6 +283,7 @@ ObjectGridStoper::Visit(CreatureMapType &m)
         iter->getSource()->CombatStop();
         iter->getSource()->DeleteThreatList();
         iter->getSource()->RemoveAllDynObjects();
+        iter->getSource()->AI()->EnterEvadeMode();
     }
 }