util.stanza: Remove redundant check for attrs
A stanza can't not have attrs if created the correct way
-- 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.
--
-- COMPAT: Only for external pre-0.9 modules
local hashes = require "util.hashes"
return {
md5 = hashes.hmac_md5,
sha1 = hashes.hmac_sha1,
sha256 = hashes.hmac_sha256,
sha512 = hashes.hmac_sha512,
};