mem_get_serids_by_unum
if (mem_get_serids_by_unum(unum, &serids, &nserids) < 0) {
if (mem_get_serids_by_unum(unum, &serids, &nserids) < 0) {
if (mem_get_serids_by_unum(unum, &serids, &nserids) < 0) {
extern int mem_get_serids_by_unum(const char *, char ***, size_t *);