Core/Networking: Fixes being disconnected when using logout button.

Source/Game/Networking/WorldSocket.cs

@@ -444,10 +444,8 @@ namespace Game.Networking
         public override void OnClose()
         {
             lock (_worldSessionLock)
-            {
-                _worldSession.Dispose();
                 _worldSession = null;
-            }
+
             base.OnClose();
         }
 

Source/Game/Server/WorldManager.cs

@@ -1855,7 +1855,7 @@ namespace Game
                         m_disconnects[session.GetAccountId()] = Time.UnixTime;
 
                     RemoveQueuedPlayer(session);
-                    m_sessions.TryRemove(pair.Key, out WorldSession tempSession);
+                    m_sessions.TryRemove(pair.Key, out _);
                     session.Dispose();
                 }
             }