Remove usage of evil list and listnode typedefs.
diff --git a/ospf6d/ospf6_area.h b/ospf6d/ospf6_area.h
index 734f030..0cee638 100644
--- a/ospf6d/ospf6_area.h
+++ b/ospf6d/ospf6_area.h
@@ -47,7 +47,7 @@
   struct ospf6_route_table *summary_router;
 
   /* OSPF interface list */
-  list if_list;
+  struct list *if_list;
 
   struct ospf6_lsdb *lsdb;
   struct ospf6_lsdb *lsdb_self;