Transliterate generated PDF filenames if transliteration module is enabled

Add after

  if (function_exists('token_replace') && !empty($pdf_filename)) {
    $pdf_filename = token_replace($pdf_filename, 'node', $node) .'.pdf';
  }
  else {
    $pdf_filename = str_replace('/', '_', $path) .'.pdf';
  }

line 79 in print_pdf.pages.inc file

  if (function_exists('transliteration_clean_filename')) {
    $pdf_filename = transliteration_clean_filename($pdf_filename, language_default('language'));
  }