func (r *Reader) Skip(cnt int) {
	if r.err != nil {
		return
	}
	var n int
	n, r.err = r.rd.Discard(cnt)
	r.cnt += n
}
func (r *Reader) Skip(cnt int) {
	if r.err != nil {
		return
	}
	var n int
	n, r.err = r.rd.Discard(cnt)
	r.cnt += n
}
// Skip skips cnt bytes from reading.