Build fix

src/server/game/Grids/Notifiers/GridNotifiers.cpp

@@ -54,6 +54,8 @@ void VisibleNotifier::SendToSelf()
                     case TYPEID_UNIT:
                         i_player.UpdateVisibilityOf((*itr)->ToCreature(), i_data, i_visibleNow);
                         break;
+                    default:
+                        break;
                 }
             }
         }