util.xml: Deduplicate handlers for restricted XML
Makes the code more like util.xmppstream, allowing easier comparisons if
we ever need to apply fixes in the future.
-- Prosody IM
-- Copyright (C) 2008-2010 Matthew Wild
-- Copyright (C) 2008-2010 Waqas Hussain
--
-- This project is MIT/X11 licensed. Please see the
-- COPYING file in the source package for more information.
--
local allow_registration = module:get_option_boolean("allow_registration", false);
if allow_registration then
module:depends("register_ibr");
end
module:depends("user_account_management");