PHP - Error del PHPMailer You must provide at least one recipient email address

<?php

require '../phpmailer/PHPMailerAutoload.php';

$con = mysqli_connect('localhost','root','', 'ticket');

$id = $_POST['id_del'];

$result = mysqli_query($con,"SELECT c.email_cliente FROM ticket t INNER JOIN dependencia d ON t.id_dependencia = d.id_dependencia INNER JOIN cliente c ON c.id_dependencia = d.id_dependencia WHERE c.id_dependencia = t.id_dependencia AND t.id = '$id'");

$mail = new PHPMailer();

$mail->isSMTP();

$mail->Host = 'smtp.gmail.com';

$mail->SMTPAuth = true;

$mail->Username = 'diego@valenzu.edu.co';

$mail->Password = '!@SDSYOId_o5}0uY';

$mail->SMTPSecure = 'ssl';

$mail->Port = 465;

$mail->setFrom('diego@valenzu.edu.co');

$mail->addAddress('$result');

$mail->Subject = 'Prueba';

$mail->Body = 'esto es una prueba';

if($mail->send() == false){

    echo "No se pudo enviar ";

    echo "Error del PHPMailer ". $mail->ErrorInfo;

}else{

    echo "se enviar";

}

?>

$mail->addAddress($result["email_cliente"]);