From e4b09237672c3f715d4eaea29319d825c3e14494 Mon Sep 17 00:00:00 2001
From: "Todd C. Miller" <millert@cvs.openbsd.org>
Date: Sun, 17 Jun 2001 22:54:45 +0000
Subject: be careful to avoid null pointer deref

---
 usr.bin/skeyinfo/skeyinfo.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

(limited to 'usr.bin/skeyinfo/skeyinfo.c')

diff --git a/usr.bin/skeyinfo/skeyinfo.c b/usr.bin/skeyinfo/skeyinfo.c
index fbf150aaac6..80050068a69 100644
--- a/usr.bin/skeyinfo/skeyinfo.c
+++ b/usr.bin/skeyinfo/skeyinfo.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: skeyinfo.c,v 1.7 2001/06/17 22:44:51 millert Exp $	*/
+/*	$OpenBSD: skeyinfo.c,v 1.8 2001/06/17 22:54:44 millert Exp $	*/
 
 /*
  * Copyright (c) 1997, 2001 Todd C. Miller <Todd.Miller@courtesan.com>
@@ -82,7 +82,8 @@ main(argc, argv)
 
 	as = auth_userchallenge(name, "skey", NULL, &challenge);
 	if (as == NULL || challenge == NULL) {
-		auth_close(as);
+		if (as)
+			auth_close(as);
 		errx(1, "unable to retrieve S/Key challenge for %s", name);
 	}
 
-- 
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