From 8e0447e9262aada3bc0753b3ce1707dccf3949ab Mon Sep 17 00:00:00 2001
From: Eugene Sandulenko
Date: Tue, 31 May 2016 13:10:35 +0200
Subject: AUDIO: Fix memory corruption.

Since it was --voice, we were reading element index -1.
---
 audio/mods/maxtrax.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'audio')

diff --git a/audio/mods/maxtrax.cpp b/audio/mods/maxtrax.cpp
index f5754a5f96..b0cdaef95a 100644
--- a/audio/mods/maxtrax.cpp
+++ b/audio/mods/maxtrax.cpp
@@ -708,7 +708,7 @@ int8 MaxTrax::noteOn(ChannelContext &channel, const byte note, uint16 volume, ui
 		voiceNum = pickvoice((channel.flags & ChannelContext::kFlagRightChannel) != 0 ? 1 : 0, pri);
 	} else {
 		VoiceContext *voice = ARRAYEND(_voiceCtx);
-		for (voiceNum = ARRAYSIZE(_voiceCtx); voiceNum-- != 0 && --voice->channel != &channel;)
+		for (voiceNum = ARRAYSIZE(_voiceCtx); voiceNum >= 0 && voice->channel != &channel; voiceNum--, voice--)
 			;
 		if (voiceNum < 0)
 			voiceNum = pickvoice((channel.flags & ChannelContext::kFlagRightChannel) != 0 ? 1 : 0, pri);
-- 
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