Creating default object from empty value

Noticed an unanswered ticket here about this.

I saw this on my local site and corrected it by changing the fake_publish function to use empty instead of isset:

function fake_publish($posts) {
    if(!empty($posts)){
        $posts[0]->post_status = 'publish';
        return $posts;
    }
}

It’s just a warning, but it’s one less ??
HTH