[Tickets #10223] error in mime decoding empty content

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Ticket URL: http://bugs.horde.org/ticket/10223
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  Ticket             | 10223
  Created By         | rick at havokmon.com
  Summary            | error in mime decoding empty content
  Queue              | Horde Base
  Version            | Git master
  Type               | Bug
  State              | Unconfirmed
  Priority           | 1. Low
  Milestone          |
  Patch              | 1
  Owners             |
+New Attachment     | mime-empty.patch
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rick at havokmon.com (2011-06-10 14:26) wrote:

logging the current error - appears to be generated by an empty MIME  
section...

2011-06-10T09:01:11-05:00 WARN: HORDE4 [imp] PHP ERROR: fseek():  
supplied argument is not a valid stream resource [pid 14684 on line  
1363 of  
"/usr/local/www/sub/data/horde_git/horde/framework/Mime/lib/Horde/Mime/Part.php"]
2011-06-10T09:01:11-05:00 WARN: HORDE4 [imp] PHP ERROR: ftell():  
supplied argument is not a valid stream resource [pid 14684 on line  
1364 of  
"/usr/local/www/sub/data/horde_git/horde/framework/Mime/lib/Horde/Mime/Part.php"]
2011-06-10T09:01:11-05:00 WARN: HORDE4 [imp] PHP ERROR: fseek():  
supplied argument is not a valid stream resource [pid 14684 on line  
1363 of  
"/usr/local/www/sub/data/horde_git/horde/framework/Mime/lib/Horde/Mime/Part.php"]
2011-06-10T09:01:11-05:00 WARN: HORDE4 [imp] PHP ERROR: ftell():  
supplied argument is not a valid stream resource [pid 14684 on line  
1364 of  
"/usr/local/www/sub/data/horde_git/horde/framework/Mime/lib/Horde/Mime/Part.php"]

caused by the code:
  elseif {
              fseek($this->_contents, 0, SEEK_END);
              $bytes = ftell($this->_contents);

Patch verifys $this->_contents exists, and sets $bytes = 0 if not.