text: #include <ree.h>
  
  int fix_ree_unnecessary_node (ree_node *node, ree_node_pool *to, ree_node_pool *from){
  
    node->unnecessary_node.unnecessary_node = 
      (void*)(node->unnecessary_node.unnecessary_node) + 
      ((intptr_t)(to->sequence) - 
       (intptr_t)(from->sequence));
  
    return 0;
  
  }
  