Question: 11- Complete the body of this template function. Check the precondition as much as possible, and don't cause a heap leak. template void list_head_remove(node *&

11- Complete the body of this template function. Check the precondition as much as possible, and don't cause a heap leak.

template

void list_head_remove(node*& head_ptr)

// Precondition: head_ptr is the head pointer of a linked list,

// with at least one node.

// Postcondition: The head node has been removed and returned to the heap;

// head_ptr is now the head pointer of the new, shorter linked list.

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