Fix "Transformation breaks on PHP 7.x"
Fix "Transformation breaks on PHP 7.x"

Patch from https://phabricator.wikimedia.org/T215746#4944830.

Ref https://github.com/cssjanus/php-cssjanus/issues/14.
Ref https://github.com/cssjanus/php-cssjanus/pull/13.

cssjanus/php-cssjanus