MidiOut::sendMessage(): parameter 'message' is of type 'const MidiMessage&' now

Midi.cpp

@@ -18,7 +18,7 @@ void MidiIn::rtmidiCallback( double timeStamp, std::vector<unsigned char> *messa
 	delete message;
 }
 
-void MidiOut::sendMessage(MidiMessage& message)
+void MidiOut::sendMessage(const MidiMessage& message)
 {
 	std::vector<unsigned char> bytes = message.getBytes();
 	RtMidiOut::sendMessage(&bytes);

Midi.h

@@ -21,5 +21,5 @@ private:
 class MidiOut : public RtMidiOut
 {
 public:
-	void sendMessage(MidiMessage& message);
+	void sendMessage(const MidiMessage& message);
 };