From: Ted Lemon <source@isc.org>
Date: Wed, 14 Mar 2001 17:40:59 +0000 (+0000)
Subject: Don't reference/dereference failover_listeners if it's null.
X-Git-Tag: V3-BETA-2-PATCH-19~12
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d2ff2ec298ac5f294aa2fae1047af026f584cc3f;p=thirdparty%2Fdhcp.git

Don't reference/dereference failover_listeners if it's null.
---

diff --git a/server/failover.c b/server/failover.c
index d931bd771..feedc1183 100644
--- a/server/failover.c
+++ b/server/failover.c
@@ -43,7 +43,7 @@
 
 #ifndef lint
 static char copyright[] =
-"$Id: failover.c,v 1.38 2001/03/01 07:25:45 mellon Exp $ Copyright (c) 1999-2001 The Internet Software Consortium.  All rights reserved.\n";
+"$Id: failover.c,v 1.39 2001/03/14 17:40:59 mellon Exp $ Copyright (c) 1999-2001 The Internet Software Consortium.  All rights reserved.\n";
 #endif /* not lint */
 
 #include "dhcpd.h"
@@ -929,9 +929,11 @@ isc_result_t dhcp_failover_listen (omapi_object_t *h)
 	}
 
 	/* Put this listener on the list. */
-	dhcp_failover_listener_reference (&obj -> next,
-					  failover_listeners, MDL);
-	dhcp_failover_listener_dereference (&failover_listeners, MDL);
+	if (failover_listeners) {
+		dhcp_failover_listener_reference (&obj -> next,
+						  failover_listeners, MDL);
+		dhcp_failover_listener_dereference (&failover_listeners, MDL);
+	}
 	dhcp_failover_listener_reference (&failover_listeners, obj, MDL);
 
 	return dhcp_failover_listener_dereference (&obj, MDL);