Fix build for esp8226

Author: pennam

src/ArduinoIoTCloud.cpp

@@ -28,7 +28,7 @@
 ArduinoIoTCloudClass::ArduinoIoTCloudClass()
 : _connection{nullptr}
 , _last_checked_property_index{0}
-, _time_service{TimeService}
+, _time_service(TimeService)
 , _tz_offset{0}
 , _tz_dst_until{0}
 , _thing_id{""}