ViolationParser: implement use of Functions::normalizeSlashes()

Improves cross-platform compatibility of the code.

With this additional change, the tests will pass on Windows as well, meaning that this part of the functionality should now also work on Windows.

Author: jrfnl

src/Parser/ViolationParser.php

@@ -4,6 +4,7 @@
 namespace App\Parser;
 
 use App\Parser\Exception\NotAViolationPath;
+use App\Util\Functions;
 use App\Value\Diff;
 use App\Value\Url;
 use App\Value\UrlList;
@@ -27,6 +28,7 @@ public function parse(string $xmlFilePath): Violation
 
     private function getErrorCode(string $xmlFilePath): string
     {
+        $xmlFilePath = Functions::normalizeSlashes($xmlFilePath);
         $part = '([^\/]*)';
         preg_match("/$part\/Docs\/$part\/{$part}Standard\/$part\.xml/", $xmlFilePath, $matches);
         if ($matches === []) {