upstream: kerberos/gssapi fixes for buffer removal

OpenBSD-Commit-ID: 1cdf56fec95801e4563c47f21696f04cd8b60c4c
diff --git a/monitor_wrap.c b/monitor_wrap.c
index cf38b23..682e39d 100644
--- a/monitor_wrap.c
+++ b/monitor_wrap.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: monitor_wrap.c,v 1.103 2018/07/09 21:53:45 markus Exp $ */
+/* $OpenBSD: monitor_wrap.c,v 1.104 2018/07/10 09:13:30 djm Exp $ */
 /*
  * Copyright 2002 Niels Provos <provos@citi.umich.edu>
  * Copyright 2002 Markus Friedl <markus@openbsd.org>
@@ -989,7 +989,7 @@
 	mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_GSSSTEP, m);
 
 	if ((r = sshbuf_get_u32(m, &major)) != 0 ||
-	    (r = sshbuf_get_string(m, &out->value, &out->length)) != 0)
+	    (r = ssh_gssapi_get_buffer_desc(m, out)) != 0)
 		fatal("%s: buffer error: %s", __func__, ssh_err(r));
 	if (flagsp != NULL) {
 		if ((r = sshbuf_get_u32(m, &flags)) != 0)