From 3beabb6c19248ded4c3e09203f88cd7e71a34dc4 Mon Sep 17 00:00:00 2001
From: James Brown
Date: Sun, 12 May 2002 10:18:40 +0000
Subject: Fix crash if envvar not set.

svn-id: r4286
---
 sound/mididrv.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'sound/mididrv.cpp')

diff --git a/sound/mididrv.cpp b/sound/mididrv.cpp
index 11c549b6af..0dc14f9558 100644
--- a/sound/mididrv.cpp
+++ b/sound/mididrv.cpp
@@ -386,7 +386,8 @@ int MidiDriver_SEQ::open(int mode) {
 			error("Cannot open /dev/null to dump midi output");
 	}
 
-	_device_num = atoi(getenv("SCUMMVM_MIDIPORT"));
+	if (getenv("SCUMMVM_MIDIPORT"))
+		_device_num = atoi(getenv("SCUMMVM_MIDIPORT"));
 	return 0;
 }
 
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