Fix the issues reported by phpcs

The issue summary should always describe what the issue is trying to fix and, in the case of coding standards issues, show which command and arguments have been used and which report that command shown.

The provided patch doesn't apply. Providing an updated patch.

When I run the reported command, I get more errors/warnings.

Rerolled patch #6, please review it.

Thanks!

-      // Authentication failed, print the authorization headers and end the request.
-    $print = $config->get('message');
-    $sitename = \Drupal::config('system.site')->get('name');
+      // Authentication failed, print the authorization headers and end the
+      // request.
+      $print = $config->get('message');
+      $sitename = \Drupal::config('system.site')->get('name');

The sentence in the comment is an example of comma-splice sentence, which is grammatically not correct. Instead of the comma, the correct punctuation mark is either the semicolon or the period.

-   * // only if KernelEvents::REQUEST !!!
-   * @see Symfony\Component\HttpKernel\KernelEvents for details
+   * Only if KernelEvents::REQUEST !!!
+   *
+   * @see Symfony\Component\HttpKernel\KernelEvents
    *
    * @param \Symfony\Component\HttpKernel\Event\GetResponseEvent $event
    *   The Event to process.

Only if KernelEvents::REQUEST !!! is not necessary, since that is clear from the used code.
The @see line must be after the @param line. The correct order is the following one.

• @var
• @param
• @return
• @throws
• @ingroup
• @deprecated
• @see
• @todo

-    // Add WwwAuthenticateLoad as a subscriber to the request event.
-    // $events[KernelEvents::REQUEST][] = array('WwwAuthenticateLoad', 20);
-    $events[KernelEvents::REQUEST][] = array('WwwAuthenticateLoad');
+  public static function getSubscribedEvents() {
+    // Add wwwAuthenticateLoad as a subscriber to the request event.
+    // $events[KernelEvents::REQUEST][] = array('wwwAuthenticateLoad', 20);.

Periods are not added at the end of commented out code. That commented out line is not even necessary, like the comment before it.

Patch updated.
Please review.