hugetlb: use set_compound_page_dtor

Use appropriate accessor function to set compound page destructor
function.

Cc:  William Irwin <wli@holomorphy.com>
Signed-off-by: NAkinobu Mita <akinobu.mita@gmail.com>
Acked-by: NAdam Litke <agl@us.ibm.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

mm/hugetlb.c

@@ -208,7 +208,7 @@ static void update_and_free_page(struct page *page)
 				1 << PG_dirty | 1 << PG_active | 1 << PG_reserved |
 				1 << PG_private | 1<< PG_writeback);
 	}
-	page[1].lru.next = NULL;
+	set_compound_page_dtor(page, NULL);
 	set_page_refcounted(page);
 	__free_pages(page, HUGETLB_PAGE_ORDER);
 }