Function cJSON_ArrayForEach

main/ota.cc:139–145

        Settings settings("mqtt", true);
        cJSON *item = NULL;
        cJSON_ArrayForEach(item, mqtt) {
            if (item->type == cJSON_String) {
                if (settings.GetString(item->string) != item->valuestring) {
                    settings.SetString(item->string, item->valuestring);
                }
            }
        }
        has_mqtt_config_ = true;
    }