Fix possible crash due to race in DiscordRichPresence

osu.Desktop/DiscordRichPresence.cs

@@ -36,8 +36,6 @@ internal partial class DiscordRichPresence : Component
         [Resolved]
         private IBindable<RulesetInfo> ruleset { get; set; } = null!;
 
-        private IBindable<APIUser> user = null!;
-
         [Resolved]
         private IAPIProvider api { get; set; } = null!;
 
@@ -50,9 +48,11 @@ internal partial class DiscordRichPresence : Component
         [Resolved]
         private MultiplayerClient multiplayerClient { get; set; } = null!;
 
+        [Resolved]
+        private OsuConfigManager config { get; set; } = null!;
+
         private readonly IBindable<UserStatus?> status = new Bindable<UserStatus?>();
         private readonly IBindable<UserActivity> activity = new Bindable<UserActivity>();
-
         private readonly Bindable<DiscordRichPresenceMode> privacyMode = new Bindable<DiscordRichPresenceMode>();
 
         private readonly RichPresence presence = new RichPresence
@@ -65,8 +65,10 @@ internal partial class DiscordRichPresence : Component
             },
         };
 
+        private IBindable<APIUser>? user;
+
         [BackgroundDependencyLoader]
-        private void load(OsuConfigManager config)
+        private void load()
         {
             client = new DiscordRpcClient(client_id)
             {
@@ -87,6 +89,13 @@ private void load(OsuConfigManager config)
                 client.OnJoin += onJoin;
             }
 
+            client.Initialize();
+        }
+
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+
             config.BindWith(OsuSetting.DiscordRichPresence, privacyMode);
 
             user = api.LocalUser.GetBoundCopy();
@@ -104,8 +113,6 @@ private void load(OsuConfigManager config)
             activity.BindValueChanged(_ => schedulePresenceUpdate());
             privacyMode.BindValueChanged(_ => schedulePresenceUpdate());
             multiplayerClient.RoomUpdated += onRoomUpdated;
-
-            client.Initialize();
         }
 
         private void onReady(object _, ReadyMessage __)
@@ -146,6 +153,9 @@ private void schedulePresenceUpdate()
 
         private void updatePresence(bool hideIdentifiableInformation)
         {
+            if (user == null)
+                return;
+
             // user activity
             if (activity.Value != null)
             {