[Pidgin] #17246: libpurrple crash with fsrawconference

[Pidgin]

#17246: libpurrple crash with fsrawconference
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 Reporter:  dwmw2   |       Owner:  EionRobb
     Type:  defect  |      Status:  new
Milestone:  2.12.1  |   Component:  unclassified
  Version:  2.12.0  |  Resolution:
 Keywords:          |
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Comment (by haakon):

 @dwmw2 I've attached my suggestion how to fix this issue. Please check
 that my patch works for you and if so, I'll create a pull request on
 Bitbucket.

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Ticket URL: <https://developer.pidgin.im/ticket/17246#comment:2>
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