Use on https site generates browser error

I installed the module on a site using https. amobb.module adds external JS using http. Generates an error in the browser.

To fix. Line 206 of amobb.module is:

    drupal_add_js('http://backpack.openbadges.org/issuer.js', 'external');

Change to:

    drupal_add_js('//backpack.openbadges.org/issuer.js', 'external');

A pixie will figure out what protocol to use.