Wrong var for username in 'Posted by' theme() call

Wrong var label for username in 'Posted by' theme() call -- 'name' should be 'account'.
See theme('username', ...) calls anywhere, i.e. modules/node/node.module:1446

In template.php function _rubik_submitted($node):
- $byline = t('Posted by !username', array('!username' => theme('username', array('name' => $node))));
+ $byline = t('Posted by !username', array('!username' => theme('username', array('account' => $node))));

Patch attached. Thanks!