From bf5a186a2b03774d7f51dd6a591a7d529894f534 Mon Sep 17 00:00:00 2001
From: Dean Herbert <pe@ppy.sh>
Date: Wed, 1 Dec 2021 17:47:16 +0900
Subject: [PATCH] Add early abort to avoid sending empty lookup requests

---
 osu.Game/Database/BeatmapLookupCache.cs | 3 +++
 osu.Game/Database/UserLookupCache.cs    | 3 +++
 2 files changed, 6 insertions(+)

diff --git a/osu.Game/Database/BeatmapLookupCache.cs b/osu.Game/Database/BeatmapLookupCache.cs
index 2082031714..c6f8244494 100644
--- a/osu.Game/Database/BeatmapLookupCache.cs
+++ b/osu.Game/Database/BeatmapLookupCache.cs
@@ -102,6 +102,9 @@ namespace osu.Game.Database
                 }
             }
 
+            if (beatmapTasks.Count == 0)
+                return;
+
             // Query the beatmaps.
             var request = new GetBeatmapsRequest(beatmapTasks.Keys.ToArray());
 
diff --git a/osu.Game/Database/UserLookupCache.cs b/osu.Game/Database/UserLookupCache.cs
index dae2d2549c..26f4e9fb3b 100644
--- a/osu.Game/Database/UserLookupCache.cs
+++ b/osu.Game/Database/UserLookupCache.cs
@@ -100,6 +100,9 @@ namespace osu.Game.Database
                 }
             }
 
+            if (userTasks.Count == 0)
+                return;
+
             // Query the users.
             var request = new GetUsersRequest(userTasks.Keys.ToArray());