Clone globaluser as its not within the same instance

src/Discord.Net.WebSocket/DiscordSocketClient.cs

@@ -1290,10 +1290,11 @@ namespace Discord.WebSocket
                                         if (user != null)
                                         {
                                             var before = user.Clone();
+                                            var beforeGlobal = user.GlobalUser.Clone();
                                             if (user.GlobalUser.Update(State, data.User))
                                             {
                                                 //Global data was updated, trigger UserUpdated
-                                                await TimedInvokeAsync(_userUpdatedEvent, nameof(UserUpdated), before.GlobalUser, user).ConfigureAwait(false);
+                                                await TimedInvokeAsync(_userUpdatedEvent, nameof(UserUpdated), beforeGlobal, user).ConfigureAwait(false);
                                             }
 
                                             user.Update(State, data);