[Pidgin] #11257: XML-invalid Unicode characters kills group chats

[Pidgin]

#11257: XML-invalid Unicode characters kills group chats
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 Reporter:  cortex        |     Owner:  rekkanoryo
     Type:  defect        |    Status:  new       
Component:  unclassified  |   Version:  2.6.5     
 Keywords:                |  
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 This is the same error as in #5768, but for group chats, where it is not
 fixed.

 In my case it was especially bad, because we had a combination with
 serverside chat room logging and autologin, which made all libpurple based
 client constantly log in and out.

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Ticket URL: <http://developer.pidgin.im/ticket/11257>
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