From 959b1ac845e8790f111004c00534c73df5c467ac Mon Sep 17 00:00:00 2001
From: Dan Balasescu <1329837+smoogipoo@users.noreply.github.com>
Date: Fri, 8 Feb 2019 17:28:00 +0900
Subject: [PATCH 1/2] Fix potential nullref when exiting multiplayer (#4227)

Fixes https://github.com/ppy/osu/issues/3954
---
 osu.Game/Screens/Multi/Multiplayer.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/osu.Game/Screens/Multi/Multiplayer.cs b/osu.Game/Screens/Multi/Multiplayer.cs
index 1741ac0b7b..50f190479b 100644
--- a/osu.Game/Screens/Multi/Multiplayer.cs
+++ b/osu.Game/Screens/Multi/Multiplayer.cs
@@ -218,7 +218,7 @@ namespace osu.Game.Screens.Multi
 
         private void cancelLooping()
         {
-            var track = beatmap.Value.Track;
+            var track = beatmap?.Value?.Track;
             if (track != null)
                 track.Looping = false;
         }

From 7ec0b4ba773180ad8d9c73004dbf1d766df6d38e Mon Sep 17 00:00:00 2001
From: Dan Balasescu <1329837+smoogipoo@users.noreply.github.com>
Date: Fri, 8 Feb 2019 17:53:01 +0900
Subject: [PATCH 2/2] Fix nullref during room creation (#4228)

---
 osu.Game/Screens/Multi/Match/Components/ReadyButton.cs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/osu.Game/Screens/Multi/Match/Components/ReadyButton.cs b/osu.Game/Screens/Multi/Match/Components/ReadyButton.cs
index 1bde6270f6..102e75cfb7 100644
--- a/osu.Game/Screens/Multi/Match/Components/ReadyButton.cs
+++ b/osu.Game/Screens/Multi/Match/Components/ReadyButton.cs
@@ -55,6 +55,9 @@ namespace osu.Game.Screens.Multi.Match.Components
 
         private void beatmapAdded(BeatmapSetInfo model, bool existing, bool silent)
         {
+            if (Beatmap.Value == null)
+                return;
+
             if (model.Beatmaps.Any(b => b.OnlineBeatmapID == Beatmap.Value.OnlineBeatmapID))
                 Schedule(() => hasBeatmap = true);
         }