libavcodec/ps.c:1025: error: Uninitialized Value
  The value read from h21i was never initialized.

libavcodec/ps.c:1025:17: 
1023.                 h11i_step = (H11[1][e+1][b] - h11i) * width;
1024.                 h12i_step = (H12[1][e+1][b] - h12i) * width;
1025.                 h21i_step = (H21[1][e+1][b] - h21i) * width;
                      ^
1026.                 h22i_step = (H22[1][e+1][b] - h22i) * width;
1027.             }
