Fix BC-Issue in Zend\Ldap 2.7.0

ErrorHandler.php

<?php
namespace Acme;

class ErrorHandler implements Zend\Ldap\ErrorHandlerInterface
{
    public function startErrorHandling($level = E_WARNING)
    {
        set_error_handler(function($errNo, $errMsg){});
    }
    
    public function stopErrorHandling()
    {
        restore_error_handler();
    }
}

\Zend\Ldap\ErrorHandler::setErrorHandler(new ErrorHandler());