Merge pull request arduino#387 from mysensors/fix-udp-compile-problems

Fix compile problems when enabling UDP

Author: fallberg

Diff for: libraries/MySensors/core/MyGatewayTransportEthernet.cpp

@@ -264,10 +264,16 @@ bool gatewayTransportAvailable()
 
 		if (packet_size) {
 			//debug(PSTR("UDP packet available. Size:%d\n"), packet_size);
-			_ethernetServer.read(inputString[0].string, MY_GATEWAY_MAX_RECEIVE_LENGTH);
-			_w5100_spi_en(false);
-			debug(PSTR("UDP packet received: %s\n"), inputString[0].string);
-			return protocolParse(_ethernetMsg, inputString[0].string);
+			#if defined(MY_GATEWAY_ESP8266)
+				_ethernetServer.read(inputString[0].string, MY_GATEWAY_MAX_RECEIVE_LENGTH);
+				debug(PSTR("UDP packet received: %s\n"), inputString[0].string);
+				return protocolParse(_ethernetMsg, inputString[0].string);
+			#else
+				_ethernetServer.read(inputString.string, MY_GATEWAY_MAX_RECEIVE_LENGTH);
+				_w5100_spi_en(false);
+				debug(PSTR("UDP packet received: %s\n"), inputString.string);
+				return protocolParse(_ethernetMsg, inputString.string);
+			#endif
 		}
 	#else
 		#if defined(MY_GATEWAY_ESP8266)