[Pidgin] #8690: Add authorization request message to callback

[Pidgin]

#8690: Add authorization request message to callback
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 Reporter:  cockroach    |        Owner:           
     Type:  enhancement  |       Status:  new      
Milestone:               |    Component:  libpurple
  Version:  2.5.5        |   Resolution:           
 Keywords:               |  
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Comment(by cockroach):

 Updated the patch to interpret return values < -1 as "just drop the
 request"

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Ticket URL: <http://developer.pidgin.im/ticket/8690#comment:7>
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