find_failed_node
if ((pnode = find_failed_node(root->child)) != NULL)
if ((pnode = find_failed_node(root->sibling)) != NULL)
if ((pnode = find_failed_node(root->child)) != NULL) {
if ((pnode = find_failed_node(root->sibling)) != NULL) {
if ((pnode = find_failed_node(parent->sibling)) != NULL)
Prom_node *find_failed_node(Prom_node *);
pnode = find_failed_node(bnode->nodes);
pnode = find_failed_node(bnode->nodes);
pnode = find_failed_node(bnode->nodes);
pnode = find_failed_node(bnode->nodes);
pnode = find_failed_node(bnode->nodes);
pnode = find_failed_node(bnode->nodes);