quiz_stats status chart doesn't recognise pass with 100% pass rate

I have a quiz that requires a 100% pass rate. The quiz_stats module generates the 'status' chart incorrectly by not recognising 'pass' results of 100%.

In quiz_stats.admin.inc, function _get_quiz_status_chart():

 181   // get the count value of results row above and below pass rate
 182   $sql = "SELECT SUM(score > $pass_rate) AS no_pass, SUM(score < $pass_rate) AS no_fail, SUM(score = 0) AS no_incomplete FROM {quiz_node_results} WHERE vid = %d";

The fix that seemed to work for me was score > $pass_rate should be score >= $pass_rate because 100 > 100 == FALSE. That is:

$sql = "SELECT SUM(score >= $pass_rate) AS no_pass, SUM(score < $pass_rate) AS no_fail, SUM(score = 0) AS no_incomplete FROM {quiz_node_results} WHERE vid = %d";