node-forum.tpl.php in HEAD version references module_exist(), which changed to module_exists() in drupal 5

Node-forum.tpl.php, line 14 reads

<?php if (module_exist('flatforum')): ?>

It should read

<?php if (module_exists('flatforum')): ?>

The function name changed from drupal 4.7 to drupal 5.0.

As written, the template file bails out at the if() and only renders the username who submitted the comment (in my instance).