criu: mem: initialize parasite_ctl->mem_pp

apparently got lost in rebase :)
Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

criu/mem.c

@@ -286,7 +286,7 @@ static int __parasite_dump_pages_seized(struct parasite_ctl *ctl,
 		return -1;
 
 	ret = -1;
-	pp = create_page_pipe(vma_area_list->priv_size, pargs_iovs(args),
+	ctl->mem_pp = pp = create_page_pipe(vma_area_list->priv_size, pargs_iovs(args),
 				!delayed_dump);
 	if (!pp)
 		goto out;