attachment_fields_to_save: parameter missing indexes

[ZaneMatthew]

When using the hook "attachment_fields_to_save " the second parameter ($attachments) no longer has the same indexes at it does on WordPress' stable release.

You can reproduce with the following, make a plugin and drop this in then upload an attachment and click "save".

function my_func( $post, $attachment ){

print '<pre>';
print_r( $attachment );
print '</pre>';
die();

}
add_action('attachment_fields_to_save', 'my_func');

Stable WordPress produces this:
Array (

[menu_order] => 0
[post_title] =>
[image_alt] =>
[post_excerpt] =>
[post_content] =>
[url] =>

)