[Pidgin] #15062: Slight tweak to releasing dragged gtkconvs

[Pidgin]

#15062: Slight tweak to releasing dragged gtkconvs
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Reporter:  dm0     |        Type:  patch       
  Status:  new     |   Component:  pidgin (gtk)
 Version:  2.10.2  |    Keywords:              
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 This patch will directly retrieve the active PidginConversation during a
 conversation drag instead of taking a PurpleConversation then converting
 it to a PidginConversation.  It will save redundant function calls since
 retrieving the PurpleConversation just wraps retrieving the
 PidginConversation anyway.

 The patch will also correct a NULL pointer dereference in one of my
 plugins from the PIDGIN_CONVERSATION call, so I would appreciate if it
 could be applied.

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Ticket URL: <http://developer.pidgin.im/ticket/15062>
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