From c7936e40d5c2b02a37ef7821b5d9698146e68a88 Mon Sep 17 00:00:00 2001
From: smoogipoo <smoogipoo@smgi.me>
Date: Mon, 23 Dec 2019 19:13:36 +0900
Subject: [PATCH] Protect against potential nullref

---
 osu.Game/Screens/Play/Player.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/osu.Game/Screens/Play/Player.cs b/osu.Game/Screens/Play/Player.cs
index 5dfdeb5ebc..8970f9ac88 100644
--- a/osu.Game/Screens/Play/Player.cs
+++ b/osu.Game/Screens/Play/Player.cs
@@ -562,7 +562,7 @@ namespace osu.Game.Screens.Play
 
             // GameplayClockContainer performs seeks / start / stop operations on the beatmap's track.
             // as we are no longer the current screen, we cannot guarantee the track is still usable.
-            GameplayClockContainer.StopUsingBeatmapClock();
+            GameplayClockContainer?.StopUsingBeatmapClock();
 
             fadeOut();
             return base.OnExiting(next);