destroy_zbuffer - Destroys a Z-buffer. Allegro game programming
library.
#include <allegro.h>
void destroy_zbuffer(ZBUFFER *zbuf);
Destroys the Z-buffer when you are finished with it. Use this to avoid
memory leaks in your program.
create_zbuffer(3alleg), set_zbuffer(3alleg), clear_zbuffer(3alleg),
exzbuf(3alleg)