hkscs_2nd_byte
if (hkscs_2nd_byte(**inbuf) == 0) {
static int hkscs_2nd_byte(char);
if (hkscs_2nd_byte(**inbuf) == 0) {
int hkscs_2nd_byte(char inbuf);
if (hkscs_2nd_byte(**inbuf) == 0) {
int hkscs_2nd_byte(char inbuf);