Glossary view by letter doesnt work

When viewing the Glossary page by letter no term show at all. This is because in the glossary_overview function the $term->let object field is evaluated to see what the first letter of the term is but this field is never initiated to anything. Something like the below statement needs to be added to the foreach loop for terms (around line 654)

$term->let = drupal_strtolower(drupal_substr($term->name, 0, 1, 'UTF-8'));