upstream: sshd: switch loginmsg to sshbuf API; ok djm@

OpenBSD-Commit-ID: f3cb4e54bff15c593602d95cc43e32ee1a4bac42
diff --git a/monitor.c b/monitor.c
index c68e1b0..44af5f4 100644
--- a/monitor.c
+++ b/monitor.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: monitor.c,v 1.180 2018/03/03 03:15:51 djm Exp $ */
+/* $OpenBSD: monitor.c,v 1.181 2018/07/09 21:26:02 markus Exp $ */
 /*
  * Copyright 2002 Niels Provos <provos@citi.umich.edu>
  * Copyright 2002 Markus Friedl <markus@openbsd.org>
@@ -115,7 +115,7 @@
 extern u_char session_id[];
 extern Buffer auth_debug;
 extern int auth_debug_init;
-extern Buffer loginmsg;
+extern struct sshbuf *loginmsg;
 extern struct sshauthopt *auth_opts; /* XXX move to permanent ssh->authctxt? */
 
 /* State exported from the child */
@@ -1495,8 +1495,8 @@
 	close(0);
 
 	/* send messages generated by record_login */
-	buffer_put_string(m, buffer_ptr(&loginmsg), buffer_len(&loginmsg));
-	buffer_clear(&loginmsg);
+	buffer_put_string(m, buffer_ptr(loginmsg), buffer_len(loginmsg));
+	buffer_clear(loginmsg);
 
 	mm_request_send(sock, MONITOR_ANS_PTY, m);