From 7f2228dbfec0268b8b486573041043c0de1aa381 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Reimar=20D=C3=B6ffinger?= <Reimar.Doeffinger@gmx.de>
Date: Wed, 15 Jun 2011 20:21:33 +0200
Subject: [PATCH] Make buffer size check consistent and avoid a possible
 overflow.

---
 libavformat/rtpenc_h264.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavformat/rtpenc_h264.c b/libavformat/rtpenc_h264.c
index 0f8850ee77..11074d0d51 100644
--- a/libavformat/rtpenc_h264.c
+++ b/libavformat/rtpenc_h264.c
@@ -40,7 +40,7 @@ static const uint8_t *avc_mp4_find_startcode(const uint8_t *start, const uint8_t
         res = (res << 8) | *start++;
     }
 
-    if (res + start > end) {
+    if (end - start < res) {
         return NULL;
     }