Minor Update to mlw_quiz.php

git-svn-id: https://plugins.svn.wordpress.org/quiz-master-next/trunk@876769 b8457f37-d9ea-0310-8a92-e5e31aec5664
Minor Update to mlw_quiz.php

git-svn-id: https://plugins.svn.wordpress.org/quiz-master-next/trunk@876770 b8457f37-d9ea-0310-8a92-e5e31aec5664