Remove all trailing whitespaces from our codebase.

Source/Core/AudioCommon/AudioCommon.cpp

@@ -24,7 +24,7 @@
 // This shouldn't be a global, at least not here.
 SoundStream *soundStream = nullptr;
 
-namespace AudioCommon 
+namespace AudioCommon
 {
 	SoundStream *InitSoundStream(CMixer *mixer, void *hWnd)
 	{

Source/Core/AudioCommon/XAudio2_7Stream.h

@@ -59,7 +59,7 @@ private:
 public:
 	XAudio2_7(CMixer *mixer);
 	virtual ~XAudio2_7();
- 
+
 	virtual bool Start();
 	virtual void Stop();