[bug] 'doing it wrong' error calling is_feed()

wp-minify.php line 67 can call is_feed() before wp_query is set, which triggers a ‘doing it wrong’ error.

One fix might be to replace line 67 with:-

if (!is_admin() && !( isset($wp_query) && is_feed() ) && !defined('XMLRPC_REQUEST')) {

http://wordpress.org/extend/plugins/wp-minify/