[HttpFoundation] fixed error casting broken in DomCrawler\Form::getPhpFiles()

src/Symfony/Component/HttpFoundation/Request.php

@@ -951,6 +951,10 @@ class Request
                 $keys = array_keys($data);
                 sort($keys);
 
+                if ($keys == $fileKeys) {
+                    $data['error'] = (int) $data['error'];
+                }
+
                 if ($keys != $fileKeys) {
                     $fixedFiles[$key] = $this->convertFileInformation($data);
                 } else if ($data['error'] === UPLOAD_ERR_NO_FILE) {