[FFmpeg-cvslog] svq3: protect against negative quantizers.

[Ronald S. Bultje]

ffmpeg | branch: release/0.8 | Ronald S. Bultje <rsbultje at gmail.com> | Mon Mar  5 17:03:32 2012 -0800| [6dfe865aed25b52b181afddd37e1622d34f57d0b] | committer: Reinhard Tartler

svq3: protect against negative quantizers.

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable at libav.org
(cherry picked from commit 11b940a1a8e7e5d5b212935a3ce78aeda577f5f2)

Signed-off-by: Reinhard Tartler <siretart at tauware.de>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=6dfe865aed25b52b181afddd37e1622d34f57d0b
---

 libavcodec/svq3.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/libavcodec/svq3.c b/libavcodec/svq3.c
index 662d74d..ec9d791 100644
--- a/libavcodec/svq3.c
+++ b/libavcodec/svq3.c
@@ -649,7 +649,7 @@ static int svq3_decode_mb(SVQ3Context *svq3, unsigned int mb_type)
     if (IS_INTRA16x16(mb_type) || (s->pict_type != AV_PICTURE_TYPE_I && s->adaptive_quant && cbp)) {
         s->qscale += svq3_get_se_golomb(&s->gb);
 
-        if (s->qscale > 31){
+        if (s->qscale > 31u){
             av_log(h->s.avctx, AV_LOG_ERROR, "qscale:%d\n", s->qscale);
             return -1;
         }