iptables: Avoid NULL pointer dereference in table_cleanup()

diff --git a/src/iptables.c b/src/iptables.c
index 807f22c..1494216 100644 (file)
--- a/src/iptables.c
+++ b/src/iptables.c
@@ -1152,6 +1152,9 @@ static void table_cleanup(struct connman_iptables *table)
        GList *list;
        struct connman_iptables_entry *entry;
 
+       if (table == NULL)
+               return;
+
        close(table->ipt_sock);
 
        for (list = table->entries; list; list = list->next) {