From 1d034e4bd5bfd6d1c871d1dde0e6a82dc6fbb887 Mon Sep 17 00:00:00 2001
From: krw <krw@openbsd.org>
Date: Wed, 21 Jun 2017 12:37:24 +0000
Subject: [PATCH] Allow familiar idiom free_client_lease(NULL).

---
 sbin/dhclient/dhclient.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sbin/dhclient/dhclient.c b/sbin/dhclient/dhclient.c
index 1715dd347ca..440d87a4762 100644
--- a/sbin/dhclient/dhclient.c
+++ b/sbin/dhclient/dhclient.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: dhclient.c,v 1.439 2017/06/19 19:28:35 krw Exp $	*/
+/*	$OpenBSD: dhclient.c,v 1.440 2017/06/21 12:37:24 krw Exp $	*/
 
 /*
  * Copyright 2004 Henning Brauer <henning@openbsd.org>
@@ -1742,7 +1742,7 @@ free_client_lease(struct client_lease *lease)
 	int i;
 
 	/* Static leases are forever. */
-	if (lease->is_static)
+	if (lease == NULL || lease->is_static)
 		return;
 
 	free(lease->server_name);
-- 
2.20.1