Merge commit '3fba16ec'

* commit '3fba16ec':
  h264: factor starting a new field out of parsing the slice header
Merged-by: Clément Bœsch <clement@stupeflix.com>

libavcodec/h264.h

@@ -375,6 +375,7 @@ typedef struct H264SliceContext {
     int mb_skip_run;
     int is_complex;
 
+    int picture_structure;
     int mb_field_decoding_flag;
     int mb_mbaff;               ///< mb_aff_frame && mb_field_decoding_flag