Feedback not available to student on assignments unless a grade has been assigned WITH PATCH

Feedback to students is not made available to students unless a grade has also been assigned. This is a bug caused by the $feedback variable not being set prior to being checked on line 244 (1.9 Beta3) of mod/assignment/lib.php.

To fix, after $submission = $this->get_submission($USER->id); around line 233 of mod/assignment/lib.php, add the line $feedback = $submission->submissioncomment;