From cf4c72d4a7403baf0cfda9daa422919c6b05f783 Mon Sep 17 00:00:00 2001
From: "alexey.lysiuk" <alexey.lysiuk@gmail.com>
Date: Mon, 14 Jun 2021 09:30:51 +0300
Subject: [PATCH] - fixed potential crash when sound sequence is destroyed

Level can be unset if sound sequence destruction happens after saved game loading failure

https://forum.zdoom.org/viewtopic.php?t=72551
---
 src/sound/s_sndseq.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/sound/s_sndseq.cpp b/src/sound/s_sndseq.cpp
index 4c7702a88..abe16c3c8 100644
--- a/src/sound/s_sndseq.cpp
+++ b/src/sound/s_sndseq.cpp
@@ -395,7 +395,7 @@ void DSeqNode::OnDestroy()
 		m_ParentSeqNode->m_ChildSeqNode = nullptr;
 		m_ParentSeqNode = nullptr;
 	}
-	if (Level->SequenceListHead == this)
+	if (Level && Level->SequenceListHead == this)
 	{
 		Level->SequenceListHead = m_Next;
 		GC::WriteBarrier(m_Next);