Fix support for pk-zip compressed figlet font files
Summary: The change from https://secure.phabricator.com/D21860 introduced a PHP error due to an invalid variable reference (zip instead of $zip). This fixes that issue as well as confirms that pk-zip compressed figlet font files can continue to be used/loaded.
Test Plan:
- I ensured I had numerous figlet font files installed in resources/figlet/custom and used file to verify that univers.flf and puffy.flf are pk-zip archives.
- With this change applied I added a comment with figlet(font=univers){{{hello}}} and verified that the comment used the univers font to render hello, and like-wise with the puffy font.
Reviewers: epriestley, Blessed Reviewers
Reviewed By: epriestley, Blessed Reviewers
Subscribers: Korvin, epriestley
Differential Revision: https://secure.phabricator.com/D21861