how to display upload or default logo in redux framework option

I am using Redux Framework for Wordpress theme. Then upload logo from redux options panel.

here is my redux option code :

array(
    'id'        => 'opt_header_logo',
    'type'      => 'media',
    'url'       => true,
    'title'     => __('Logo', 'demo' ),
    'compiler'  => 'false',
    'subtitle'  => __('Upload your logo', 'demo' ),
    'default'   => array('url' => IMAGES . '/logo.png'),
),

here is my display code :

<?php if($redux_demo['opt_header_logo']['url']!='') { ?>
    <img alt="" src="<?php bloginfo('template_directory'); ?>/images/logo.png">
<?php } else { ?>
    <img src="<?php global $redux_demo; echo''.$redux_demo['opt_header_logo']['url']; ?>">
<?php } ?>

i want to display default image if image is not uploaded. this code is display uploaded image perfectly but when i delete uploaded image from redux option default image is not showing.

Please help ?

Thanks

ok finally i got the answer and my code is working fine.

here is my output working code:

                    <?php global $redux_demo; if($redux_demo['opt_header_logo']['url']!='') { ?>
                        <img src="<?php echo $redux_demo['opt_header_logo']['url']; ?>">
                    <?php } else { ?>
                        <img alt="" src="<?php bloginfo('template_directory'); ?>/images/logo.png">
                    <?php } ?>