Spurious messages in logfiles with PHP 5.5

New warnings in PHP 5.5 gives spurious messages in logfiles:
PHP Warning: Invalid argument supplied for foreach() in /administrator/components/com_civicrm/civicrm/api/v3/Domain.php on line 59

Simple fix. Change lines 59 from:
$domains = _civicrm_api3_dao_to_array($bao, $params, true,'domain');

foreach ($domains as $domain) {
to
$domains = _civicrm_api3_dao_to_array($bao, $params, true,'domain');

foreach ((array)$domains as $domain) {

Better idea could be for _civicrm_api3_dao_to_array to return an array and not a false on empty domains.
A check could be made for similar functions also.