From b08caf5813c43e8648cdf5db1e003b3046a37c2c Mon Sep 17 00:00:00 2001
From: alecpl <alec@alec.pl>
Date: Wed, 31 Aug 2011 08:49:44 -0400
Subject: [PATCH] - Applied fixes from trunk up to r5150

---
 program/steps/mail/func.inc |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/program/steps/mail/func.inc b/program/steps/mail/func.inc
index b04628f..0c19b66 100644
--- a/program/steps/mail/func.inc
+++ b/program/steps/mail/func.inc
@@ -1448,7 +1448,7 @@
 {
   global $RCMAIL, $IMAP;
 
-  if (!is_a($message, rcube_message))
+  if (!is_object($message) || !is_a($message, rcube_message))
     $message = new rcube_message($message);
 
   if ($message->headers->mdn_to && !$message->headers->mdn_sent &&

--
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