--- linux/mm/page_alloc.c	Mon Apr  8 17:29:21 2002
+++ linux-numaq/mm/page_alloc.c	Mon Apr  8 17:37:07 2002
@@ -410,7 +410,7 @@
 	 */
 	zone = zonelist->zones;
 	if (*zone == NULL)
-		return;
+		return NULL;
 	min = 1UL << order;
 	for (;;) {
 		zone_t *z = *(zone++);