[pkg-horde] Bug#675586: imp4: parsing mail headers is broken since PHP5.4

[Marc Dequènes (Duck)]

Package: imp4
Version: 4.3.10+debian0-1
Severity: important


Coin,

After applying patch in #675526, i was able to use Horde3+Imp4 again.  
Nevertheless, the headers displayed are broken when they need to be  
decoded. For example, the provided screenshot is the result of:
   From: "Marc =?utf-8?b?RGVxdcOobmVz?= (Duck)" <duck at duckcorp.org>
   To: duck at duckcorp.org
I could check with several other mails it only fails when the headers  
are encoded.

As a result, when i try to reply to mails having this problem, the To  
field is empty, the quoted message is missing, and i got this error in  
the logs:
   [Sat Jun 02 12:25:42 2012] [error] [client  
2001:7a8:810:6969:21f:d0ff:fe8f:cfec] PHP Warning:  Creating default  
object from empty value in  
/usr/share/horde3/imp/lib/IMAP/MessageCache.php on line 340, referer:  
https://webdesk.duckcorp.org/imp/message.php?mailbox=INBOX&index=13221

Regards.

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