CH_REMOVE
if (CH_REMOVE(pend_prefix_hash, &peer->pend_prefixes, pp) != pp) {
CH_REMOVE(adjout_attr_tree, &attrtable, a);
CH_REMOVE(pend_attr_hash, &peer->pend_attrs, pa);
CH_REMOVE(attr_tree, &attrtable, a);
CH_REMOVE(comm_tree, &commtable, comm);
CH_REMOVE(rde_filtertable, &filter, rf);
CH_REMOVE(rde_filterset, &filterset, rfs);
CH_REMOVE(path_tree, &pathtable, asp);