Description:
------------
getmxxr() function on PHP7 and Windows broke. getmmxxr() returns TRUE on both cases, but on PHP the mxhosts array is EMPTY.

Test script:
---------------
$mxhosts = [];
echo getmxrr('gmail.com', $mxhosts) ? 'FOUND' : 'NOT FOUND';
echo json_encode($mxhosts);
exit();

Expected result:
----------------
FOUND["alt2.gmail-smtp-in.l.google.com","alt4.gmail-smtp-in.l.google.com","gmail-smtp-in.l.google.com","alt1.gmail-smtp-in.l.google.com","alt3.gmail-smtp-in.l.google.com"]

Actual result:
--------------
FOUND[]