Fixed: Don't crash in NetplayController if connection is dropped during connecting stage.

Author: Sewer56

Riders.Tweakbox/Controllers/NetplayController.cs

@@ -204,10 +204,7 @@ await Shell.AddDialogAsync("Enter Password", (ref bool opened) =>
     /// </summary>
     private void OnEndScene()
     {
-        if (Socket != null)
-        {
-            Socket.Update();
-            Socket.OnFrame();
-        }
+        Socket?.Update();
+        Socket?.OnFrame();
     }
 }