From cdbee9972aca6da04ff8a1d0b564e8758782f9fb Mon Sep 17 00:00:00 2001
From: Thierry Crozat
Date: Sat, 5 Oct 2013 00:24:30 +0100
Subject: SWORD25: Fix possible error in sound engine when loading a savegame

The error occurred when the save game was saved early in the game
before all the sound handles had been used. The unused handles only had
the handle type initialised (as kFreeHandle) so all the other fields had
random values. After loading the game the sound engine could erroneously
try to play one of these sound handle resulting in an error.
---
 engines/sword25/sfx/soundengine.cpp | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/engines/sword25/sfx/soundengine.cpp b/engines/sword25/sfx/soundengine.cpp
index d90849e449..8ff1b0cf2a 100644
--- a/engines/sword25/sfx/soundengine.cpp
+++ b/engines/sword25/sfx/soundengine.cpp
@@ -339,7 +339,10 @@ bool SoundEngine::persist(OutputPersistenceBlock &writer) {
 			_handles[i].type = kFreeHandle;
 
 		writer.writeString(_handles[i].fileName);
-		writer.write(_handles[i].sndType);
+		if (_handles[i].type == kFreeHandle)
+			writer.write((int32)-1);
+		else
+			writer.write(_handles[i].sndType);
 		writer.write(_handles[i].volume);
 		writer.write(_handles[i].pan);
 		writer.write(_handles[i].loop);
@@ -381,7 +384,7 @@ bool SoundEngine::unpersist(InputPersistenceBlock &reader) {
 		reader.read(layer);
 
 		if (reader.isGood()) {
-			if (sndType != kFreeHandle)
+			if (sndType != -1)
 				playSoundEx(fileName, (SOUND_TYPES)sndType, volume, pan, loop, loopStart, loopEnd, layer, i);
 		} else
 			return false;
-- 
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