Duplicate site_name_attributes

Corrolla's page.tpl.php has

<h1 id="site-name"<?php print $site_name_attributes; ?>><?php print $site_name; ?></h1>

whereas AT core page.tpl.php has

<h1<?php print $site_name_attributes; ?>><?php print $site_name; ?></h1>

which I reckon accounts for the html have 2 id="site-name" attributes and failing http://validator.w3.org validation. I guess id="site-name" is included in $site_name_attributes.

This applies to

id="site-name"
id="site-slogan"
id="name-and-slogan"