Return length from receive()

libraries/MySensors/MyRFDriverNRF24.cpp

@@ -61,6 +61,7 @@ bool MyRFDriverNRF24::available(uint8_t *to) {
 uint8_t MyRFDriverNRF24::receive(void* data) {
 	uint8_t len = rf24->getDynamicPayloadSize();
 	rf24->read(data, len);
+	return len;
 }
 
 void MyRFDriverNRF24::powerDown() {

libraries/MySensors/MyRFDriverRF69.cpp

@@ -42,6 +42,7 @@ uint8_t MyRFDriverRF69::receive(void* data) {
     {
       radio->sendACK();
     }
+	return radio->DATALEN;
 }	
 
 void MyRFDriverRF69::powerDown() {