[FFmpeg-cvslog] avcodec/vc1dec: fix null pointer dereference

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Mon Aug 25 02:17:32 2014 +0200| [30f680ee0a2707af9a649a0aa3fd951d18a25c05] | committer: Michael Niedermayer

avcodec/vc1dec: fix null pointer dereference

Fixes Ticket3860

Signed-off-by: Michael Niedermayer <michaelni at gmx.at>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=30f680ee0a2707af9a649a0aa3fd951d18a25c05
---

 libavcodec/vc1dec.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/vc1dec.c b/libavcodec/vc1dec.c
index bcfa4df..a25c3d9 100644
--- a/libavcodec/vc1dec.c
+++ b/libavcodec/vc1dec.c
@@ -5484,7 +5484,7 @@ static int vc1_decode_sprites(VC1Context *v, GetBitContext* gb)
     if (ret < 0)
         return ret;
 
-    if (!s->current_picture.f->data[0]) {
+    if (!s->current_picture.f || !s->current_picture.f->data[0]) {
         av_log(avctx, AV_LOG_ERROR, "Got no sprites\n");
         return -1;
     }