Fix missing Mail-Followup-To header in sent mail (#1489829)

Aleksander Machniak

2014-04-23 847e7548d5eb74d60a3a92e8b82eddb96085a82f

 program/steps/mail/sendmail.inc

@@ -201,7 +201,7 @@
    $headers['Mail-Reply-To'] = $headers['Reply-To'];
}
if ($hdr = rcube_utils::get_input_value('_followupto', rcube_utils::INPUT_POST, TRUE, $message_charset)) {
    $headers['Mail-Followup-To'] = rcmail_email_input_format();
    $headers['Mail-Followup-To'] = rcmail_email_input_format($hdr);
}

// remember reply/forward UIDs in special headers