[Pidgin] #5215: XMPP: use feature discovery before using features

[Pidgin]

#5215: XMPP: use feature discovery before using features
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 Reporter:  urkle   |        Owner:  deryni
     Type:  defect  |       Status:  new   
Milestone:          |    Component:  XMPP  
  Version:  2.4.0   |   Resolution:        
 Keywords:          |  
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Comment(by bernmeister):

 Move to Patches Welcome?

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Ticket URL: <http://developer.pidgin.im/ticket/5215#comment:4>
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