upstream commit

sync ssh-keysign, ssh-keygen and some dependencies to the
 new buffer/key API; mostly mechanical, ok markus@
diff --git a/msg.h b/msg.h
index b0cb9b5..dfb3424 100644
--- a/msg.h
+++ b/msg.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: msg.h,v 1.4 2006/03/25 22:22:43 djm Exp $ */
+/* $OpenBSD: msg.h,v 1.5 2015/01/15 09:40:00 djm Exp $ */
 /*
  * Copyright (c) 2002 Markus Friedl.  All rights reserved.
  *
@@ -25,7 +25,8 @@
 #ifndef SSH_MSG_H
 #define SSH_MSG_H
 
-int	 ssh_msg_send(int, u_char, Buffer *);
-int	 ssh_msg_recv(int, Buffer *);
+struct sshbuf;
+int	 ssh_msg_send(int, u_char, struct sshbuf *);
+int	 ssh_msg_recv(int, struct sshbuf *);
 
 #endif