upstream commit

fix regression in 7.4 server-sig-algs, where we were
accidentally excluding SHA2 RSA signature methods. bz#2680, patch from Nuno
Goncalves; ok dtucker@

Upstream-ID: 81ac8bfb30960447740b9b8f6a214dcf322f12e8
diff --git a/kex.c b/kex.c
index 5b42518..8ac0029 100644
--- a/kex.c
+++ b/kex.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: kex.c,v 1.129 2017/03/10 03:45:40 dtucker Exp $ */
+/* $OpenBSD: kex.c,v 1.130 2017/03/10 04:07:20 djm Exp $ */
 /*
  * Copyright (c) 2000, 2001 Markus Friedl.  All rights reserved.
  *
@@ -350,7 +350,7 @@
 	int r;
 	char *algs;
 
-	if ((algs = sshkey_alg_list(0, 1, ',')) == NULL)
+	if ((algs = sshkey_alg_list(0, 1, 1, ',')) == NULL)
 		return SSH_ERR_ALLOC_FAIL;
 	if ((r = sshpkt_start(ssh, SSH2_MSG_EXT_INFO)) != 0 ||
 	    (r = sshpkt_put_u32(ssh, 1)) != 0 ||