int nmons, i = 0;

	LayerSurface *l, *tmp;
	int nmons, i;
	for (i = 0; i <= ZWLR_LAYER_SHELL_V1_LAYER_OVERLAY; i++) {
		wl_list_for_each_safe(l, tmp, &m->layers[i], link) {
			wlr_scene_node_set_enabled(l->scene, 0);
			wlr_layer_surface_v1_destroy(l->layer_surface);
		}
	}

	if ((nmons = wl_list_length(&mons)))

	if (!(i = 0) && (nmons = wl_list_length(&mons)))