sql error when creating a quiz without any question modules enabled

i got sql query broken because i have created quiz first without creating question.

messagePDOException: SQLSTATE[42000]: Syntax error or access violation: 1064 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ')) AND (parent_vid = '1') AND (parent_nid = '1') AND (question_status = '1') AND' at line 3: SELECT n.nid AS nid, n.type AS type, nr.vid AS vid, nr.title AS title, qnr.question_status AS question_status, qnr.weight AS weight, qnr.max_score AS max_score, n.vid AS latest_vid FROM {node} n INNER JOIN {node_revision} nr ON n.nid = nr.nid LEFT OUTER JOIN {quiz_node_relationship} qnr ON nr.vid = qnr.child_vid WHERE (n.type IN ()) AND (parent_vid = :db_condition_placeholder_0) AND (parent_nid = :db_condition_placeholder_1) AND (question_status = :db_condition_placeholder_2) AND (n.status = :db_condition_placeholder_3) ORDER BY weight ASC; Array ( [:db_condition_placeholder_0] => 1 [:db_condition_placeholder_1] => 1 [:db_condition_placeholder_2] => 1 [:db_condition_placeholder_3] => 1 ) in quiz_get_questions() (line 3600 of C:\wamp\www\d7\sites\all\modules\contrib\quiz\quiz.module).

This is problem occur due to
quiz.module
line no 3578

 if ($include_all_types === TRUE) {
    $query->condition('n.type', array_keys(_quiz_get_question_types()), 'IN');
  }

should be

$question_type=_quiz_get_question_types();
 if ($include_all_types === TRUE && count($question_type)>0) {
    $query->condition('n.type', array_keys($question_type), 'IN');
  }