MFV r257952:

Upgrade to OpenSSH 6.4p1.

Bump VersionAddendum.

Approved by:	des

crypto/openssh/clientloop.c

@@ -1,4 +1,4 @@
-/* $OpenBSD: clientloop.c,v 1.253 2013/06/07 15:37:52 dtucker Exp $ */
+/* $OpenBSD: clientloop.c,v 1.255 2013/11/08 00:39:15 djm Exp $ */
 /* $FreeBSD$ */
 /*
  * Author: Tatu Ylonen <ylo@cs.hut.fi>
@@ -838,7 +838,7 @@ void
 client_expect_confirm(int id, const char *request,
     enum confirm_action action)
 {
-	struct channel_reply_ctx *cr = xmalloc(sizeof(*cr));
+	struct channel_reply_ctx *cr = xcalloc(1, sizeof(*cr));
 
 	cr->request_type = request;
 	cr->action = action;
@@ -861,7 +861,7 @@ client_register_global_confirm(global_confirm_cb *cb, void *ctx)
 		return;
 	}
 
-	gc = xmalloc(sizeof(*gc));
+	gc = xcalloc(1, sizeof(*gc));
 	gc->cb = cb;
 	gc->ctx = ctx;
 	gc->ref_count = 1;
@@ -1439,7 +1439,7 @@ client_new_escape_filter_ctx(int escape_char)
 {
 	struct escape_filter_ctx *ret;
 
-	ret = xmalloc(sizeof(*ret));
+	ret = xcalloc(1, sizeof(*ret));
 	ret->escape_pending = 0;
 	ret->escape_char = escape_char;
 	return (void *)ret;