libavcodec/motion_est_template.c:726: error: Uninitialized Value
  The value read from xmax was never initialized.

libavcodec/motion_est_template.c:726:5: 
724.     CHECK_CLIPPED_MV(x+1, y);
725.     CHECK_CLIPPED_MV(x, y+1);
726.     CHECK_CLIPPED_MV(x-1, y);
         ^
727.     CHECK_CLIPPED_MV(x, y-1);
728. 
