Use NULL, not 0, when comparing a pointer

diff --git a/wpa_supplicant/ctrl_iface_dbus_handlers.c b/wpa_supplicant/ctrl_iface_dbus_handlers.c
index 0cb558e..3c29804 100644 (file)
--- a/wpa_supplicant/ctrl_iface_dbus_handlers.c
+++ b/wpa_supplicant/ctrl_iface_dbus_handlers.c
@@ -153,7 +153,7 @@ DBusMessage * wpas_dbus_global_add_interface(DBusMessage *message,
         * Try to get the wpa_supplicant record for this iface, return
         * an error if we already control it.
         */
-       if (wpa_supplicant_get_iface(global, iface.ifname) != 0) {
+       if (wpa_supplicant_get_iface(global, iface.ifname) != NULL) {
                reply = dbus_message_new_error(message,
                                               WPAS_ERROR_EXISTS_ERROR,
                                               "wpa_supplicant already "