- Fix memory leak in DMA sound after S_Shutdown()

- Make codec load use temp hunk memory instead of zone mem
- Fix sound issues with direct sound and game_restart (#4526)

code/client/snd_local.h

@@ -202,6 +202,7 @@ qboolean S_LoadSound( sfx_t *sfx );
 void		SND_free(sndBuffer *v);
 sndBuffer*	SND_malloc( void );
 void		SND_setup( void );
+void		SND_shutdown(void);
 
 void S_PaintChannels(int endtime);