From ceb97152c75a2b147e1cee89c053b57866730f61 Mon Sep 17 00:00:00 2001
From: James Brown <ender@users.sourceforge.net>
Date: Thu, 9 May 2002 18:03:07 +0000
Subject: [PATCH] Fix odd Sam and Max iMUSE crash. Thread syncronisation bug?

svn-id: r4256
---
 sound/imuse.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/sound/imuse.cpp b/sound/imuse.cpp
index 70a1ff3508c..511c7a1a417 100644
--- a/sound/imuse.cpp
+++ b/sound/imuse.cpp
@@ -4411,6 +4411,13 @@ void IMuseGM::part_changed(Part *part, byte what)
 	if (!(mc = part->_mc->gm()))
 		return;
 
+	if (part->_player == NULL) {	/* No player, so dump phantom channel */
+		part->_mc = NULL;
+		mc->_part = NULL;
+		memset(mc->_actives, 0, sizeof(mc->_actives));
+		return;
+	}
+
 	if (what & pcMod)
 		midiPitchBend(mc->_chan,
 									clamp(part->_pitchbend + part->_detune_eff +