From a1a9238bd161d553ece76851b62204c653f3c0d8 Mon Sep 17 00:00:00 2001
From: andy840119 <andy840119@gmail.com>
Date: Sun, 30 Oct 2022 16:31:07 +0800
Subject: [PATCH] Use empty string instead of null because issue template not
 accept null.

---
 osu.Game/Rulesets/Edit/Checks/CheckMutedObjects.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/osu.Game/Rulesets/Edit/Checks/CheckMutedObjects.cs b/osu.Game/Rulesets/Edit/Checks/CheckMutedObjects.cs
index d755b5bba5..5b59a81f91 100644
--- a/osu.Game/Rulesets/Edit/Checks/CheckMutedObjects.cs
+++ b/osu.Game/Rulesets/Edit/Checks/CheckMutedObjects.cs
@@ -72,7 +72,7 @@ private IEnumerable<Issue> getVolumeIssues(HitObject hitObject, HitObject? sampl
             if (edgeType == EdgeType.None)
                 yield break;
 
-            string postfix = hitObject is IHasDuration ? edgeType.ToString().ToLowerInvariant() : null;
+            string postfix = hitObject is IHasDuration ? edgeType.ToString().ToLowerInvariant() : string.Empty;
 
             if (maxVolume <= muted_threshold)
             {