From: Roy Marples <roy@marples.name>
Date: Tue, 19 Feb 2013 15:43:29 +0000 (+0000)
Subject: Fix a crash.
X-Git-Tag: v5.99.6~50
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=53dae786ecd0fce63089984fdb845835c139935f;p=thirdparty%2Fdhcpcd.git

Fix a crash.
---

diff --git a/dhcpcd.c b/dhcpcd.c
index e06d5138..fd685122 100644
--- a/dhcpcd.c
+++ b/dhcpcd.c
@@ -73,7 +73,7 @@ const char copyright[] = "Copyright (c) 2006-2013 Roy Marples";
 #define RELEASE_DELAY_S		0
 #define RELEASE_DELAY_NS	10000000
 
-struct if_head *ifaces;
+struct if_head *ifaces = NULL;
 char vendor[VENDORCLASSID_MAX_LEN];
 int pidfd = -1;
 struct if_options *if_options = NULL;
@@ -140,11 +140,13 @@ cleanup(void)
 
 	free_options(if_options);
 
-	while ((ifp = TAILQ_FIRST(ifaces))) {
-		TAILQ_REMOVE(ifaces, ifp, next);
-		free_interface(ifp);
+	if (ifaces) {
+		while ((ifp = TAILQ_FIRST(ifaces))) {
+			TAILQ_REMOVE(ifaces, ifp, next);
+			free_interface(ifp);
+		}
+		free(ifaces);
 	}
-	free(ifaces);
 
 	for (i = 0; i < ifac; i++)
 		free(ifav[i]);