Fix PHP warning when replied message contains exactly one Delivered-To header

Aleksander Machniak

2012-12-07 176172c850a6836a9804c24b29b8ada13040670b

 program/steps/mail/compose.inc

@@ -454,7 +454,7 @@
  // Fallback using Delivered-To
  if ($from_idx === null && ($delivered_to = $MESSAGE->headers->others['delivered-to'])) {
    foreach ($identities as $idx => $ident) {
      if (in_array($ident['email_ascii'], $delivered_to)) {
      if (in_array($ident['email_ascii'], (array)$delivered_to)) {
        $from_idx = $idx;
        break;
      }