Not at all, in fact, the patch only modified two files:
- mod/glossary/lib.php
- mod/glossary/comment.php
you can get them from CVS or from nightly downloads ("+" versions for the release you are using - Moodle 1.7+, 1.8+...).
Although it's always recommended to update to the whole latest nightly available (instead of modifying individual files) to be less buggy and more secure.
Ciao