Blank line in securepages_secure textarea causes Homepage redirection

Issue Summary

If an admin concludes his list of pages to secure with a blank line (e.g. by hitting enter after the last page on the securepages_secure list), the site's root page (e.g. /) will be identified as needing to be secure. This occurs because the path variable will be set to null, which will match up against the blank line in the securepages_secure list. The Secure Pages module will redirect to https, and append the site_frontpage drupal variable to the path. Chances are, this path will not be included in the securepages_secure list, so the site will redirect back down to http, leaving the site_frontpage path appended on.

This is problematic for several reasons: it causes problems with SEO, it slows the loading of the site's homepage, and it adds unnecessary load on the server.

It can be corrected by adding a trim() function call when retrieving the securepages_page variable (and probably the securepages_ignore variable) in the securepages_match function:

Other modules require the <front> string to reference the frontpage, so removing any blank lines should not eliminate the ability to secure the frontpage, assuming you are providing that option.