add: if (mixer_data) { HFree (mixer_data); mixer_data = 0; }
context: mixSDL_CloseAudio (void){	if (audio_opened)	{		if (audio_opened == 1)		{			SDL_CloseAudio();			mixSDL_TermMutex (src_mutex);			mixSDL_TermMutex (buf_mutex);			mixSDL_TermMutex (act_mutex);		}		--audio_opened;	}}