Core/Players: Added error message for death knights attempting to leave their starting zone early

src/server/game/Entities/Player/Player.cpp

@@ -1526,7 +1526,10 @@ bool Player::TeleportTo(uint32 mapid, float x, float y, float z, float orientati
     else
     {
         if (getClass() == CLASS_DEATH_KNIGHT && GetMapId() == 609 && !IsGameMaster() && !HasSpell(50977))
+        {
+            SendTransferAborted(mapid, TRANSFER_ABORT_UNIQUE_MESSAGE, 1);
             return false;
+        }
 
         // far teleport to another map
         Map* oldmap = IsInWorld() ? GetMap() : nullptr;