justintadlock/breadcrumb-trail — pull request #2 by meloniq (2014-01-25 17:03:27+00:00)
Title: Correct rewrite check

Corrects rewrite check, might not be ```false```, but do not apply when the permalinks are disabled, also fixes undefined index notices

WP core checks:

- post: https://core.trac.wordpress.org/browser/tags/3.8.1/src/wp-includes/post.php#L1279

- taxonomy: https://core.trac.wordpress.org/browser/tags/3.8.1/src/wp-includes/taxonomy.php#L359