[FFmpeg-cvslog] ff_h264_direct_ref_list_init: fix B slice check.

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Sun Nov 18 18:46:05 2012 +0100| [36cf247e4302afcb09e995ad1c594d97897d17ba] | committer: Michael Niedermayer

ff_h264_direct_ref_list_init: fix B slice check.

Fixes null pointer dereference.

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni at gmx.at>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=36cf247e4302afcb09e995ad1c594d97897d17ba
---

 libavcodec/h264_direct.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/h264_direct.c b/libavcodec/h264_direct.c
index ce395a3..9ef5862 100644
--- a/libavcodec/h264_direct.c
+++ b/libavcodec/h264_direct.c
@@ -131,7 +131,7 @@ void ff_h264_direct_ref_list_init(H264Context * const h){
         h->col_fieldoff = 2 * h->ref_list[1][0].f.reference - 3;
     }
 
-    if (cur->f.pict_type != AV_PICTURE_TYPE_B || h->direct_spatial_mv_pred)
+    if (h->slice_type_nos != AV_PICTURE_TYPE_B || h->direct_spatial_mv_pred)
         return;
 
     for(list=0; list<2; list++){