fix(Core/Character): fix worldserver with autobalance mod crash when character creation fails (#17625)

* set vars before clean player when create err

* code style

* dont clean

* code style

* check flag

src/server/game/Handlers/CharacterHandler.cpp

@@ -536,8 +536,12 @@ void WorldSession::HandleCharCreateOpcode(WorldPacket& recvData)
             }
 
             std::shared_ptr<Player> newChar(new Player(this), [](Player* ptr)
+            {
+                // Only when player is created correctly do clean
+                if (ptr->HasAtLoginFlag(AT_LOGIN_FIRST))
                 {
                     ptr->CleanupsBeforeDelete();
+                }
                 delete ptr;
             });