From 79358733b090b3b15a8d18da8e8b0964c9edf5e1 Mon Sep 17 00:00:00 2001
From: Laine Stump <laine@laine.org>
Date: Thu, 20 Feb 2014 13:59:55 +0200
Subject: [PATCH] conf: handle null pointer in virNetDevVlanFormat

Other *Format() functions (e.g. virNetDevBandwidthFormat()) return
with no action when called with a NULL *Def pointer. This makes
virNetDevVlanFormat() consistent with that behavior.
---
 src/conf/netdev_vlan_conf.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/conf/netdev_vlan_conf.c b/src/conf/netdev_vlan_conf.c
index f58b4b8fd7..dbe203e8f9 100644
--- a/src/conf/netdev_vlan_conf.c
+++ b/src/conf/netdev_vlan_conf.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2009-2013 Red Hat, Inc.
+ * Copyright (C) 2009-2014 Red Hat, Inc.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
@@ -144,7 +144,7 @@ virNetDevVlanFormat(const virNetDevVlan *def, virBufferPtr buf)
 {
     size_t i;
 
-    if (def->nTags == 0)
+    if (!(def && def->nTags))
         return 0;
 
     if (!def->tag) {