(svn r6709) -Fix r6679: [build train window] solved an issue that could lead to trailing empty blocks in the list array
Since they were freed with the rest of the array, it only meant that we wasted a few bytes (max 16) while the window were open and we didn't leak memory

/* $Id$ */

#ifndef SOUND_NULL_H
#define SOUND_NULL_H

#include "../hal.h"

extern const HalSoundDriver _null_sound_driver;

#endif