al_uninstall_system - Allegro 5 API

       Closes down the Allegro system.

              Note: al_uninstall_system() can be called without a corresponding al_install_system(3alleg5) call,
              e.g. from atexit().

Allegro reference manual                                                            al_uninstall_system(3alleg5)

       al_uninstall_system - Allegro 5 API

              #include <allegro5/allegro.h>

              void al_uninstall_system(void)