[Pidgin] #5840: Receving transfers through jabber proxy results in corrupt files

[Pidgin]

#5840: Receving transfers through jabber proxy results in corrupt files
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Reporter:  sniperbeamer  |       Owner:  nwalp                         
    Type:  defect        |      Status:  new                           
Priority:  minor         |   Component:  XMPP                          
 Version:  2.4.2         |    Keywords:  file transfer proxy bytestream
 Pending:  0             |  
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 Receiving transfers through a jabber bytestream proxy server (XEP-0065)
 results in corrupt files.
 The files start with two 0-bytes and the last two bytes are cut off.

 I identified the problem in proxy.c (see patch).
 The proxy server sends: 05 00 00 00 00 00
 Pidgin reads only 4 bytes but should read 6.

 Though I don't know if this patch has any side effects.

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Ticket URL: <http://developer.pidgin.im/ticket/5840>
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