Change SCARD_READERSTATE initialization

- To remove some compiler warnings

src/cardreader.cpp

@@ -255,7 +255,7 @@ void* CardReader::HandlerFunction(void* arg) {
     /* Unlock the mutex */
     pthread_mutex_unlock(&reader->m_mutex);
 
-    SCARD_READERSTATE card_reader_state = { 0 };
+    SCARD_READERSTATE card_reader_state = SCARD_READERSTATE();
     card_reader_state.szReader = reader->m_name.c_str();
     card_reader_state.dwCurrentState = SCARD_STATE_UNAWARE;