static dgn_region_list no_door_fixup_zones;

    no_door_fixup_zones.clear();

            if (grd[dx][dy] == DNGN_CLOSED_DOOR && one_chance_in(4))

            if (grd[dx][dy] == DNGN_CLOSED_DOOR && one_chance_in(4)
                && unforbidden(coord_def(dx, dy), no_door_fixup_zones))

    no_door_fixup_zones.push_back(
        dgn_region( place.x, place.y, place.width, place.height ) );
    

    no_door_fixup_zones.push_back(
        dgn_region( place.x, place.y, place.width, place.height ) );