PDF pages are empty in drupal 6.26 without enabled Token module

After upgrading from version 6.x-1.14 to 6.x-1.17 PDF pages are empty or an error message is displayed (depending on the PHP error_reporting setting) if the Token module is not enabled in a drupal 6.x site.

I think the reason for the problem lies in the following code block in print_pdf/print_pdf.pages.inc (line 42):

if (function_exists('token_replace') && !empty($pdf_filename) && !empty($node)) {
	$pdf_filename = token_replace($pdf_filename, 'node', $node);
}
else {
	$pdf_filename = token_replace($pdf_filename, 'global');
	if (empty($pdf_filename) || count(token_scan($pdf_filename))) {
		// If there are still tokens, use a fallback solution
		$pdf_filename = str_replace('/', '_', $path);
	}
}

The if condition tests for the existence of the function 'token_replace' but the else branch also users this function wich leads to an error.

After installing and enabling the Token module the PDF pages are displayed correct (with the current developer version of the print module).