libavcodec/h264.c:4720: error: Uninitialized Value
  The value read from sub_partition_count[_] was never initialized.

libavcodec/h264.c:4720:30: 
4718.                     const int sub_mb_type= h->sub_mb_type[i];
4719.                     const int block_width= (sub_mb_type & (MB_TYPE_16x16|MB_TYPE_16x8)) ? 2 : 1;
4720.                     for(j=0; j<sub_partition_count[i]; j++){
                                   ^
4721.                         int mx, my;
4722.                         const int index= 4*i + block_width*j;
