D-Bus: Skip property update actions when wpa_config_set() returns 1

When network properties are updated via dbus, wpa_config_set() is used
to update the property in the wpa_ssid struct. If it returns 1, the
property was not changed and there's no need to perform any of the
update actions.

Signed-off-by: Matthew Wang <matthewmwang@chromium.org>

wpa_supplicant/dbus/dbus_new_handlers.c

@@ -268,8 +268,11 @@ dbus_bool_t set_network_properties(struct wpa_supplicant *wpa_s,
 		} else
 			goto error;
 
-		if (wpa_config_set(ssid, entry.key, value, 0) < 0)
+		ret = wpa_config_set(ssid, entry.key, value, 0);
+		if (ret < 0)
 			goto error;
+		if (ret == 1)
+			goto skip_update;
 
 		if (os_strcmp(entry.key, "bssid") != 0 &&
 		    os_strcmp(entry.key, "priority") != 0)
@@ -291,6 +294,7 @@ dbus_bool_t set_network_properties(struct wpa_supplicant *wpa_s,
 		else if (os_strcmp(entry.key, "priority") == 0)
 			wpa_config_update_prio_list(wpa_s->conf);
 
+	skip_update:
 		os_free(value);
 		value = NULL;
 		wpa_dbus_dict_entry_clear(&entry);