Forward Tracking Report does not display summary statistics

I looked at the forward_tracking function and the 1st few lines looked to be generating in the format "xxx emails sent to yyy recipients" yet that was not showing up on the report displayed.

The code looked like:
$output['forward_totals'] = '

' . variable_get('forward_total', 0) . ' ' . t('emails sent to') . ' ' . variable_get('forward_recipients', 0) . ' ' . t('recipients') . '

';

and I changed it to (on the chance that being consistent with all the stuff that did display would work):
$output['forward_totals'] = array('#markup' => '

' . variable_get('forward_total', 0) . ' ' . t('emails sent to') . ' ' . variable_get('forward_recipients', 0) . ' ' . t('recipients') . '

');

With the updated module the summary line is now displayed.