After patch "ext4: Fix races of writeback with punch hole and zero
range" we don't flush range that's going to be zeroed out which results
in different final extent layout because some extents will be zeroed-out
instead of being split. Update the output file accordingly.
Signed-off-by: Jan Kara <jack@suse.com> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>