merged branch instaclick/ignore-validation-exception (PR symfony#4748)

Commits ------- 383efdf Ignore validation exception so we get a more informative error message from $this->getXmlErrors(). Discussion ---------- Ignore validation exception so we get a more informative error message Ignore validation exception so we get a more informative error message from $this->getXmlErrors(). This is consistent with https://github.com/symfony/symfony/blob/master/src/Symfony/Component/Translation/Loader/XliffFileLoader.php#L82

Author: fabpot

src/Symfony/Component/DependencyInjection/Loader/XmlFileLoader.php

@@ -345,7 +345,7 @@ private function validateSchema(\DOMDocument $dom, $file)
  ;
 
  $current = libxml_use_internal_errors(true);
- $valid = $dom->schemaValidateSource($source);
+ $valid = @$dom->schemaValidateSource($source);
  foreach ($tmpfiles as $tmpfile) {
  @unlink($tmpfile);
  }