TS_CONF_set_serial
LCRYPTO_USED(TS_CONF_set_serial);
int TS_CONF_set_serial(CONF *conf, const char *section, TS_serial_cb cb,
LCRYPTO_ALIAS(TS_CONF_set_serial);
if (!TS_CONF_set_serial(conf, section, serial_cb, resp_ctx))