Notice: Undefined index: revision in quiz_question_node_form_submit()

Hi,

I receive a notice every time I try to create Multiple choice question. It is:

Notice: Undefined index: revision in quiz_question_node_form_submit() (line 142 of sites/all/modules/contrib/quiz/question_types/quiz_question/quiz_question.module).

It is this line of code:

if ($form_state['values']['revision']) {

As far as I understood there is some issues with quiz and revisions so I decided to go with the quick and obvious fix to put the $form_state['values']['revision'] into isset().

Patch in the comment below.

Regards,
Lachezar