dn_find
if ((l = dn_find(dn-1, msg, dnptrs, lpp)) >= 0) {
static int dn_find(u_char *exp_dn, u_char *msg, u_char **dnptrs,
l = dn_find(srcp, msg, (const u_char * const *)dnptrs,
static int dn_find(const u_char *, const u_char *,