Fixing Cacti#5636 - LDAP Issues with newer PHP versions

Cacti 1.2.26 error on LDAP authentication the first time

Author: TheWitness

CHANGELOG

@@ -3,6 +3,7 @@ Cacti CHANGELOG
 1.2.27
 -issue#5622: Errors and deprecation warnings with PHP 8.3.0
 -issue#5629: auth_changepassword.php cannot return to the refer url by just clicking the "Return" button once
+-issue#5636: Cacti 1.2.26 error on LDAP authentication the first time
 -issue#5638: Add tooltip info about IPv6 address
 -issue#5645: Boost poller fail to update rrd which Data Template and Graph Template items do not match
 -issue#5648: Fractional time offsets can cause huge webserver error-logs

lib/ldap.php

@@ -371,6 +371,7 @@ public static function GetErrorDetails($returnError, $ldapConn = null, $ldapServ
 
 class Ldap {
 	public $dn;
+	public $cn;
 	public $host;
 	public $username;
 	public $password;