Notice: Undefined index: settings in QuickQuicktabs->add_attached() (line 121 of /quicktabs/plugins/QuickQuicktabs.inc)

I've created a custom filter to render Quicktabs within filtered text fields (I can share the code if you feel it would be worth adding to this module).

I'm getting a warning "Notice: Undefined index: settings in QuickQuicktabs->add_attached() (line 121 of /quicktabs/plugins/QuickQuicktabs.inc)" because no other JS settings have been defined at that point.

$javascript = drupal_add_js();
foreach ($javascript['settings']['data'] as $key => $settings) {
  if (key($settings) == 'quicktabs') {
    $qtkey = $key;
    break;
  }
}

I will attach a patch shortly.