hammer_modify_node_noundo
hammer_modify_node_noundo(cursor->trans, parent);
hammer_modify_node_noundo(cursor->trans, new_node);
hammer_modify_node_noundo(cursor->trans, parent);
hammer_modify_node_noundo(cursor->trans, new_leaf);
hammer_modify_node_noundo(trans, node);
hammer_modify_node_noundo(cursor->trans, nnode);
hammer_modify_node_noundo(cursor->trans, nnode);