build_tree
local_node = build_tree(card, self_ids, self_id_count, generation);
static void build_tree (deflate_state *s, tree_desc *desc);
build_tree(s, (tree_desc *)(&(s->bl_desc)));
build_tree(s, (tree_desc *)(&(s->l_desc)));
build_tree(s, (tree_desc *)(&(s->d_desc)));