[Pidgin] #9791: File transfer resource selection should not offer resources which will immediately be denied

[Pidgin]

#9791: File transfer resource selection should not offer resources which will
immediately be denied
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 Reporter:  darkrain42  |     Owner:  darkrain42
     Type:  defect      |    Status:  new       
Component:  XMPP        |   Version:  2.5.8     
 Keywords:              |  
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 Before presenting the resource selection dialog in si.c, query all
 resources (with a short timeout, probably) for capabilities and only
 display resources for which the file transfer could possibly continue.

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Ticket URL: <http://developer.pidgin.im/ticket/9791>
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