[Pidgin] #7761: Fixes for libpurple to avoid segfaults

[Pidgin]

#7761: Fixes for libpurple to avoid segfaults
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Reporter:  vadiml  |        Type:  defect   
  Status:  new     |   Component:  libpurple
 Version:  2.5.2   |    Keywords:           
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 I'm submitting fixes for bugs we've discovered in while integrating
 libpurple 2.5.1 into QuteCom.

 The patches seems to be valid for 2.5.1 too

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Ticket URL: <http://developer.pidgin.im/ticket/7761>
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