fix(wps): fixes wps struct initialization

C99 complaint

Author: SuGlider

Diff for: libraries/WiFi/examples/WPS/WPS.ino

@@ -25,7 +25,14 @@ WPS (pin is 00000000)
 #define ESP_WPS_MODE WPS_TYPE_PBC
 
 void wpsStart() {
-  esp_wps_config_t config = WPS_CONFIG_INIT_DEFAULT(ESP_WPS_MODE);
+  esp_wps_config_t config;
+  //Same as config = WPS_CONFIG_INIT_DEFAULT(ESP_WPS_MODE);
+  config.wps_type = ESP_WPS_MODE;
+  strcpy(config.factory_info.manufacturer, "ESPRESSIF");
+  strcpy(config.factory_info.model_number, CONFIG_IDF_TARGET);
+  strcpy(config.factory_info.model_name, "ESPRESSIF IOT");
+  strcpy(config.factory_info.device_name, "ESP DEVICE");
+  strcpy(config.pin, "00000000");
   esp_err_t err = esp_wifi_wps_enable(&config);
   if (err != ESP_OK) {
     Serial.printf("WPS Enable Failed: 0x%x: %s\n", err, esp_err_to_name(err));