Emtpy Value in moodlecourse | maxsections defaults to 0 when editing a course

When moodlecourse | maxsections is empty it defaults to 0 when editing or creating a course, so the courses always have 0 topics/weeks after editing.

in the lib/adminlib.php (line 3606) the value is checked and the standard is set to 52

/** Lazy-load the available choices for the select box */

public function load_choices() {

    $max = get_config('moodlecourse', 'maxsections');

    if (empty($max)) {

        $max = 52;

    }

in course/edit_form.php (line 123) the value isn't checked and therfore not set to 52 if empty.

for ($i = 0; $i <= $courseconfig->maxsections; $i++) {

	$sectionmenu[$i] = "$i";

}

should check first for

if (empty($courseconfig->maxsections)) {

    $courseconfig->maxsections = 52;

}

PS: Isn't there a more elegant way to set/check the defaults?