revert logic

booking.emails.inc

@@ -390,7 +390,7 @@ function _booking_promoted_from_waitinglist_email($nid) {
 		$params['headers']['Bcc'] = BOOKING_EMAIL_DEV_NOTIFY;
 	} 
 
-	if ($tokens['payment-required'] >= 0) {
+	if ($tokens['payment-required'] == 0) {
 		watchdog('booking_debug', 'This person has fully paid so sending Not sending promoted-from-waitinglist-fullypaid email.');
 		$message_body = variable_get('booking_email_waitinglistpromotion_fullypaid');
 	}