Update didacticNet.h

src/didacticNet.h

@@ -71,8 +71,8 @@ class didacticPSNet
 		didacticPSNet();
 		~didacticPSNet();
 
-		begin(Stream& _port);
-		begin(Stream& _port, PSNET_CALLBACK_SIGNATURE);
+		void begin(Stream& _port);
+		void begin(Stream& _port, PSNET_CALLBACK_SIGNATURE);
 		bool handleNetwork();
 		bool isDataToSend();