XF 2.2 How to make this single PHP file edit as XF2 addon?

[rdn]

So it will not be overwritten every XF upgrades.
Basically, I want to return 404 for private threads/forums instead of 403 status.

File to Edit
/src/XF/ControllerPlugin/Error.php

Change line 72 & 75

    public function actionRegistrationRequired()
    {
        $view = $this->view('XF:Error\RegistrationRequired', 'login', [
            'error' => \XF::phrase('requested_page_not_found'),
            'providers' => \XF::repository('XF:ConnectedAccount')->getUsableProviders(false)
        ]);
        $view->setResponseCode(404);

        return $view;
    }

Changes are:
requested_page_not_found & 404

 

[rdn]

@Ozzy47 maybe you can create an addon out of this?

 

[Ozzy47]

I’ll look into it when I get some free time.

 

[Kirby]

Doing this is semantically wrong, the URL does exist.
But anyway ...

 

[rdn]

Thank you so much Kirby.