temp fix for deadlocks in SoundSDL on pause #139

SDL_PauseAudioDevice seems to be causing thread deadlocks in combination
with Wx threads (e.g. on menu activation or modal dialogs.)

Remove these calls from SoundSDL::pause() and SoundSDL::resume() for the
time being so that deadlocks do not happen.

This effectively allows pausing, but on resume there is no sound for 2-3
seconds until the buffer is filled again.

This will need a proper fix at a later time.

src/common/SoundSDL.cpp

@@ -175,7 +175,7 @@ void SoundSDL::pause()
 	if (!_initialized)
 		return;
 
-	SDL_PauseAudioDevice(_dev, 1);
+	//SDL_PauseAudioDevice(_dev, 1); // this causes thread deadlocks
 }
 
 void SoundSDL::resume()
@@ -183,7 +183,7 @@ void SoundSDL::resume()
 	if (!_initialized)
 		return;
 
-	SDL_PauseAudioDevice(_dev, 0);
+	//SDL_PauseAudioDevice(_dev, 0); // this causes thread deadlocks
 }
 
 void SoundSDL::reset()