wpninjas/ninja-forms — pull request #152 by claudiosmweb (2014-01-21 18:50:41+00:00)
Title: Fixed a warning in includes/display/fields/display-fields.php

I had the following warning here:

>Notice: Undefined variable: address_class in [....]/wp-content/plugins/ninja-forms/includes/display/fields/display-fields.php on line 362

The variable is not always created and so need to check if exists before testing it.