fixed GPIO handler error

pocket_friends/game_files/game.py

@@ -41,6 +41,7 @@ def game():
     # The game is normally rendered at 80 pixels and upscaled from there. If changing displays, change the
     # screen_size to reflect what the resolution of the new display is.
     if gpio_handler.ON_HARDWARE:
+        gpio_handler.setup()
         screen_size = 240
         pygame.mouse.set_visible(False)
         window = pygame.display.set_mode((screen_size, screen_size), pygame.FULLSCREEN)
@@ -85,4 +86,5 @@ def main():
     """
     game()
 
+    gpio_handler.teardown()
     pygame.quit()