s_client starttls: fix handling of multiline reply
Fixes
@@ -2277,7 +2277,7 @@ int s_client_main(int argc, char **argv)
do {
mbuf_len = BIO_gets(fbio, mbuf, BUFSIZZ);
}
- while (mbuf_len > 3 && mbuf[3] == '-');
+ while (mbuf_len > 3 && (!isdigit(mbuf[0]) || !isdigit(mbuf[1]) || !isdigit(mbuf[2]) || mbuf[3] != ' '));
(void)BIO_flush(fbio);
BIO_pop(fbio);
BIO_free(fbio);
