MAGETWO-34293: Html minification works incorrectly in Layered Navigation

fix PAT build

Author: AndriyNasinnyk

lib/internal/Magento/Framework/Filesystem/Driver/File.php

@@ -750,6 +750,9 @@ public function getRealPath($path)
      */
     public function getRealPathSafety($path)
     {
+        if (strpos($path, DIRECTORY_SEPARATOR . '..' . DIRECTORY_SEPARATOR) === false) {
+            return $path;
+        }
         $pathParts = explode(DIRECTORY_SEPARATOR, $path);
         $realPath = [];
         foreach ($pathParts as $pathPart) {