From dc317139c90576f1c2d30b9ff885d1818c604610 Mon Sep 17 00:00:00 2001
From: Miterosan <miterosan@gmail.com>
Date: Tue, 7 Nov 2017 23:15:02 +0100
Subject: [PATCH] beatmap can not be null in BeatmapSetHeader.cs

---
 osu.Game/Beatmaps/Drawables/BeatmapSetHeader.cs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/osu.Game/Beatmaps/Drawables/BeatmapSetHeader.cs b/osu.Game/Beatmaps/Drawables/BeatmapSetHeader.cs
index ee75b77747..f1dc933a3f 100644
--- a/osu.Game/Beatmaps/Drawables/BeatmapSetHeader.cs
+++ b/osu.Game/Beatmaps/Drawables/BeatmapSetHeader.cs
@@ -36,6 +36,9 @@ namespace osu.Game.Beatmaps.Drawables
 
         public BeatmapSetHeader(WorkingBeatmap beatmap)
         {
+            if (beatmap == null)
+                throw new ArgumentNullException(nameof(beatmap));
+
             this.beatmap = beatmap;
 
             Children = new Drawable[]