Error on feature edit page when configuration missing from feature

Add one more line to fix this issue in FeaturesEditForm.php

    // Make a map of any config specifically excluded and/or required.
    foreach (array('excluded', 'required') as $constraint) {
      $this->{$constraint} = array();
      $info = !empty($this->package->getFeaturesInfo()[$constraint]) ? $this->package->getFeaturesInfo()[$constraint] : array();
      foreach ($info as $item_name) {
        if (!in_array($item_name, $config)) continue;
        $item = $config[$item_name];
        $this->{$constraint}[$item->getType()][$item->getShortName()] = $item->getLabel();
      }
    }

Adding the patch suggested by @koiler since the code works properly.
Please review PHPCS

Actually, the patch in #7 isn't correct. You don't test if $item_name is in the $config array since it's a key. You use !isset. Here is a correct patch.

(Also, Drupal coding standard doesn't allow "continue" on the same line like that I don't believe)

Ack, sorry, that got another issue mixed in. Here is the correct patch.

@nedjo: Do we know what is causing all the patches to fail testing? How do we even see the test results in D8 these days?

OK, committed to 6de80fb