GCC4 audit.c warning: no return statement in

diff -puN kernel/audit.c~audit-patch kernel/audit.c
@@ -278,12 +278,13 @@ static int audit_set_failure(int state, 
 int kauditd_thread(void *dummy)
 {
 	struct sk_buff *skb;
+	int err = 0;
 
 	while (1) {
 		skb = skb_dequeue(&audit_skb_queue);
 		if (skb) {
 			if (audit_pid) {
-				int err = netlink_unicast(audit_sock, skb, audit_pid, 0);
+				err = netlink_unicast(audit_sock, skb, audit_pid, 0);
 				if (err < 0) {
 					BUG_ON(err != -ECONNREFUSED); /* Shoudn't happen */
 					printk(KERN_ERR "audit: *NO* daemon at audit_pid=%d\n", audit_pid);

@@ -305,6 +306,7 @@ int kauditd_thread(void *dummy)
 			remove_wait_queue(&kauditd_wait, &wait);
 		}
 	}
+	return err;
 }
 
 void audit_send_reply(int pid, int seq, int type, int done, int multi,