From 6b591ac77f4d4f2c4c173fcf41248f18ef76c183 Mon Sep 17 00:00:00 2001
From: Dean Herbert <pe@ppy.sh>
Date: Fri, 17 Nov 2017 19:12:30 +0900
Subject: [PATCH] Add missing initialisation

---
 osu.Game/Beatmaps/WorkingBeatmap.cs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/osu.Game/Beatmaps/WorkingBeatmap.cs b/osu.Game/Beatmaps/WorkingBeatmap.cs
index 9ae87bc0a7..c9acbefd87 100644
--- a/osu.Game/Beatmaps/WorkingBeatmap.cs
+++ b/osu.Game/Beatmaps/WorkingBeatmap.cs
@@ -32,6 +32,7 @@ namespace osu.Game.Beatmaps
             beatmap = new Lazy<Beatmap>(populateBeatmap);
             background = new Lazy<Texture>(populateBackground);
             track = new Lazy<Track>(populateTrack);
+            waveform = new Lazy<Waveform>(populateWaveform);
         }
 
         protected abstract Beatmap GetBeatmap();
@@ -73,7 +74,7 @@ namespace osu.Game.Beatmaps
 
         public bool WaveformLoaded => waveform.IsValueCreated;
         public Waveform Waveform => waveform.Value;
-        private Lazy<Waveform> waveform;
+        private readonly Lazy<Waveform> waveform;
 
         private Waveform populateWaveform() => GetWaveform();