Temp: check network interface type only for boards with ethernet support

Author: pennam

Diff for: src/ArduinoIoTCloudTCP.cpp

@@ -308,7 +308,11 @@ int ArduinoIoTCloudTCP::begin(bool const enable_watchdog, String brokerAddress,
   if (enable_watchdog) {
     watchdog_enable();
 #if defined (WIFI_HAS_FEED_WATCHDOG_FUNC) || defined (ARDUINO_PORTENTA_H7_WIFI_HAS_FEED_WATCHDOG_FUNC)
+#ifdef BOARD_HAS_ETHERNET
     bool const use_ethernet = _connection->getInterface() == NetworkAdapter::ETHERNET ? true : false;
+#else
+    bool const use_ethernet = false;
+#endif
     watchdog_enable_network_feed(use_ethernet);
 #endif
   }
@@ -831,7 +835,11 @@ void ArduinoIoTCloudTCP::onOTARequest()
 #endif
 
 #ifdef BOARD_STM32H7
+#ifdef BOARD_HAS_ETHERNET
   bool const use_ethernet = _connection->getInterface() == NetworkAdapter::ETHERNET ? true : false;
+#else
+  bool const use_ethernet = false;
+#endif
   _ota_error = portenta_h7_onOTARequest(_ota_url.c_str(), use_ethernet);
 #endif
 }