实际上就算从头结点开始循环也没问题吧？

    Node* CurrentNode = m_pList;
    while (CurrentNode->next != nullptr)
    {
         if (CurrentNode == pCurrentNode)
         {
               pNextNode->data = CurrentNode->next->data;
               return true;
         }
              CurrentNode = CurrentNode->next;
    }
    return false;