func (r *Reader) ReadUint16() uint16 {
	if r.err != nil {
		return 0
	}

	buf := r.buf[:2]

	var readN int
	readN, r.err = io.ReadFull(r.reader, buf)
	if readN < 2 {
		return 0
	}
	return binary.BigEndian.Uint16(buf)
}
func (r *Reader) ReadUint16() uint16 {
	if r.err != nil {
		return 0
	}

	buf := r.buf[:2]

	var readN int
	readN, r.err = io.ReadFull(r.reader, buf)
	if readN < 2 {
		return 0
	}
	return binary.BigEndian.Uint16(buf)
}
// ReadUint16 reads a uint16.