Session date is always session status in export

[djarran]

Description: In the following function, $sessiondate is never defined and so it will always write the session status for the session date column

moodle-mod_facetoface/lib.php

Lines 1766 to 1799 in af644c7

	function facetoface_write_activity_attendance_helper(
	&$worksheet,
	$i,
	$session,
	$customsessionfields,
	$status,
	$dateformat,
	$starttime,
	$finishtime
	) {
	global $DB;
	$j = 0;
	// Custom session fields.
	$customdata = $DB->get_records('facetoface_session_data', ['sessionid' => $session->id], '', 'fieldid, data');
	foreach ($customsessionfields as $field) {
	if (empty($field->showinsummary)) {
	continue; // Skip.
	}
	$data = '-';
	if (!empty($customdata[$field->id])) {
	if (CUSTOMFIELD_TYPE_MULTISELECT == $field->type) {
	$data = str_replace(CUSTOMFIELD_DELIMITER, "\n", $customdata[$field->id]->data);
	} else {
	$data = $customdata[$field->id]->data;
	}
	}
	$worksheet->write_string($i, $j++, $data);
	}
	if (empty($sessiondate)) {
	$worksheet->write_string($i, $j++, $status); // Session date.