RBT_FOREACH_SAFE
#ifdef RBT_FOREACH_SAFE
RBT_FOREACH_SAFE(ins, tree, &root, tmp) {
RBT_FOREACH_SAFE(bm, bio_mappings, &bios, next) {
RBT_FOREACH_SAFE(unvn, unvname_rbt, &uv->uv_names, next) {
RBT_FOREACH_SAFE(unvn, unvname_rbt, &from->uv_names, next) {
RBT_FOREACH_SAFE(ebe, eb_tree, &eb->eb_tree, nebe) {
RBT_FOREACH_SAFE(v, veb_pvlan_vp, &sc->sc_pvlans_vp, nv) {
RBT_FOREACH_SAFE(v, veb_pvlan_vs, &sc->sc_pvlans_vs, nv) {
RBT_FOREACH_SAFE(st, pf_state_tree_id, &tree_id, nextst) {