A bug with Anonymous and empty list of pages

1. install path_access module (don't change any settings in path_access module - a list of pages must be empty)
2. go to front page as an Anonymous user.
3. the first attempt may be successfull (if cache was empty). If so, go to front page again (refresh).

problem: nothing is displayed - page is empty.

Description of the fix:
function path_access_init()
if ($pages) - always work because $pages variable will never be empty (at least one '/n' will always be in the end).
$pages = trim($pages) was added before this IF operator. I have always changed this IF to if (!empty($pages))