libavcodec/h264.h:1120: error: Uninitialized Value
  The value read from topright_type was never initialized.

libavcodec/h264.h:1120:16: 
1118.             }
1119. 
1120.             if(USES_LIST(topright_type, list)){
                     ^
1121.                 const int b_xy= h->mb2b_xy[topright_xy] + 3*h->b_stride;
1122.                 const int b8_xy= h->mb2b8_xy[topright_xy] + h->b8_stride;
