Addressed some criticism

getRecordingDevices internal function is now returns constant reference,
also re-enumerates devices every time it is called; this is a slow operation
getID removed for not being useful

--HG--
branch : minor-mic-input

src/modules/audio/null/Audio.cpp

@@ -144,9 +144,9 @@ float Audio::getDopplerScale() const
 	return 1.0f;
 }
 
-std::vector<love::audio::RecordingDevice*> *Audio::getRecordingDevices()
+const std::vector<love::audio::RecordingDevice*> &Audio::getRecordingDevices()
 {
-	return &capture;
+	return capture;
 }
 
 Audio::DistanceModel Audio::getDistanceModel() const

src/modules/audio/null/Audio.h

@@ -71,7 +71,7 @@ public:
 	void setDopplerScale(float scale);
 	float getDopplerScale() const;
 
-	std::vector<love::audio::RecordingDevice*> *getRecordingDevices();
+	const std::vector<love::audio::RecordingDevice*> &getRecordingDevices();
 
 	DistanceModel getDistanceModel() const;
 	void setDistanceModel(DistanceModel distanceModel);

src/modules/audio/null/RecordingDevice.cpp

@@ -82,11 +82,6 @@ const char *RecordingDevice::getName() const
 	return name;
 }
 
-int RecordingDevice::getID() const
-{
-	return 0;
-}
-
 bool RecordingDevice::isRecording() const
 {
 	return false;

src/modules/audio/null/RecordingDevice.h

@@ -41,7 +41,6 @@ public:
 	virtual void stopRecording();
 	virtual love::sound::SoundData *getData();
 	virtual const char *getName() const;
-	virtual int getID() const;
 	virtual int getSampleCount() const;
 	virtual int getSampleRate() const;
 	virtual int getBitDepth() const;