From 4856a3c084b3a2968275cb326303decbdc259cbf Mon Sep 17 00:00:00 2001
From: Alibek Omarov <a1ba.omarov@gmail.com>
Date: Fri, 5 May 2023 21:19:58 +0300
Subject: [PATCH] Revert "engine: soundlib: wav: attempt to make FindNextChunk
 more safe"

This reverts commit 78e239d883505e1ad64232812bce6ea8b726632f.
---
 engine/common/soundlib/snd_wav.c | 17 ++---------------
 1 file changed, 2 insertions(+), 15 deletions(-)

diff --git a/engine/common/soundlib/snd_wav.c b/engine/common/soundlib/snd_wav.c
index b5466439..97c268e3 100644
--- a/engine/common/soundlib/snd_wav.c
+++ b/engine/common/soundlib/snd_wav.c
@@ -62,14 +62,11 @@ FindNextChunk
 */
 static void FindNextChunk( const char *name )
 {
-	int remaining;
-
 	while( 1 )
 	{
 		iff_dataPtr = iff_lastChunk;
-		remaining = iff_end - iff_dataPtr;
 
-		if( remaining < 8 )
+		if( iff_dataPtr >= iff_end )
 		{
 			// didn't find the chunk
 			iff_dataPtr = NULL;
@@ -79,24 +76,14 @@ static void FindNextChunk( const char *name )
 		iff_dataPtr += 4;
 		iff_chunkLen = GetLittleLong();
 
-		remaining -= 8;
-
 		if( iff_chunkLen < 0 )
 		{
 			iff_dataPtr = NULL;
 			return;
 		}
 
-		if( iff_chunkLen > remaining )
-		{
-			iff_chunkLen = remaining;
-		}
-
-		remaining -= iff_chunkLen;
 		iff_dataPtr -= 8;
-		iff_lastChunk = iff_dataPtr + 8 + iff_chunkLen;
-		if( iff_chunkLen & 1 && remaining )
-			iff_chunkLen++;
+		iff_lastChunk = iff_dataPtr + 8 + ((iff_chunkLen + 1) & ~1);
 
 		if( !Q_strncmp( (const char *)iff_dataPtr, name, 4 ))
 			return;