simplify cork interface related

Signed-off-by: Jason Volk <jason@zemos.net>

src/api/client/sync.rs

@@ -138,7 +138,7 @@ pub(crate) async fn sync_events_route(
 		.collect::<Vec<_>>();
 
 	// Coalesce database writes for the remainder of this scope.
-	let _cork = services().globals.db.cork_and_flush();
+	let _cork = services().db.cork_and_flush();
 
 	for room_id in all_joined_rooms {
 		let room_id = room_id?;