Fix s_client early data indicator

s_client was always saying that early_data was rejected even when it was
accepted. This was because it was using the wrong test to detect the end
of the handshake. It was using SSL_in_init() which only tells you whether
it is currently processing/sending/expecting handshake messages. It should
use SSL_is_init_finished() which tells you that no handshake messages are
being processed/sent/expected AND we have completed the handshake. In the
early data case we are not processing/sending handshake messages and we
are expecting early data (not a handshake message) - but the handshake has
not yet completed.
Reviewed-by: NRich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3090)

apps/s_client.c

@@ -2403,7 +2403,7 @@ int s_client_main(int argc, char **argv)
         else
             timeoutp = NULL;
 
-        if (SSL_in_init(con) && !SSL_total_renegotiations(con)
+        if (!SSL_is_init_finished(con) && SSL_total_renegotiations(con) == 0
                 && SSL_get_key_update_type(con) == SSL_KEY_UPDATE_NONE) {
             in_init = 1;
             tty_on = 0;