[Plugin: Register Plus Redux] %siteurl% replacement doesn't work in e-mails

Line 1912 of register-plus-redux.php reads:

$message = str_replace('%admin_message_subject%', $siteurl, $message);

This should, of course, read:

$message = str_replace('%siteurl%', $siteurl, $message);

Otherwise, it’s rather hard for people to register if you have the ‘Prevent fake email address registrations’ option activated– because they won’t be sent a link with which to activate!