Allow that the DEFAULT_URI does not end with a slash

We normalize the url with an env var processor before passing it to the saml lib, to avoid an error. Fixes issue #1118

src/Services/CustomEnvVarProcessor.php

@@ -1,52 +0,0 @@
-<?php
-/**
- * This file is part of Part-DB (https://github.com/Part-DB/Part-DB-symfony).
- *
- * Copyright (C) 2019 - 2022 Jan Böhmer (https://github.com/jbtronics)
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published
- * by the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-declare(strict_types=1);
-
-namespace App\Services;
-
-use Closure;
-use Symfony\Component\DependencyInjection\EnvVarProcessorInterface;
-use Symfony\Component\DependencyInjection\Exception\EnvNotFoundException;
-
-final class CustomEnvVarProcessor implements EnvVarProcessorInterface
-{
-    public function getEnv($prefix, $name, Closure $getEnv): bool
-    {
-        if ('validMailDSN' === $prefix) {
-            try {
-                $env = $getEnv($name);
-
-                return !empty($env) && 'null://null' !== $env;
-            } catch (EnvNotFoundException) {
-                return false;
-            }
-        }
-
-        return false;
-    }
-
-    public static function getProvidedTypes(): array
-    {
-        return [
-            'validMailDSN' => 'bool',
-        ];
-    }
-}