util.pposix: Fix incorrect syslog facility mapping The array of Lua constants accidentally omitted "news", leading to later constants ("syslog", "user" and "uucp") being assigned to the wrong POSIX constants.

local xpcall = xpcall;

if select(2, xpcall(function (x) return x end, function () end,  "test")) ~= "test" then
	xpcall = require"prosody.util.compat".xpcall;
end

return {
	xpcall = xpcall;
};