Maybe I'm misunderstanding but this chunk aught to be unreachable - either the user provided an explicit whitelist, or it defaulted to the main table's schema. The intention _is_ to remove this, and make [this line](https://github.com/markstory/cakephp/blob/c58f9aa07bf4f77c38a0033389364bb407541688/Cake/Controller/Component/PaginatorComponent.php#L308) the last line of the method, right?