From b51abfc72220646e1af51663fdc317bf58b0b3bd Mon Sep 17 00:00:00 2001
From: Dean Herbert <pe@ppy.sh>
Date: Tue, 12 Apr 2022 18:01:13 +0900
Subject: [PATCH] Fix `ScoreDownloadTracker` matching on empty hash equality

---
 osu.Game/Online/ScoreDownloadTracker.cs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/osu.Game/Online/ScoreDownloadTracker.cs b/osu.Game/Online/ScoreDownloadTracker.cs
index d7e31c8a59..ed1c566dbe 100644
--- a/osu.Game/Online/ScoreDownloadTracker.cs
+++ b/osu.Game/Online/ScoreDownloadTracker.cs
@@ -47,7 +47,10 @@ namespace osu.Game.Online
             Downloader.DownloadBegan += downloadBegan;
             Downloader.DownloadFailed += downloadFailed;
 
-            realmSubscription = realm.RegisterForNotifications(r => r.All<ScoreInfo>().Where(s => ((s.OnlineID > 0 && s.OnlineID == TrackedItem.OnlineID) || s.Hash == TrackedItem.Hash) && !s.DeletePending), (items, changes, ___) =>
+            realmSubscription = realm.RegisterForNotifications(r => r.All<ScoreInfo>().Where(s =>
+                ((s.OnlineID > 0 && s.OnlineID == TrackedItem.OnlineID)
+                 || (!string.IsNullOrEmpty(s.Hash) && s.Hash == TrackedItem.Hash))
+                && !s.DeletePending), (items, changes, ___) =>
             {
                 if (items.Any())
                     Schedule(() => UpdateState(DownloadState.LocallyAvailable));