[tor-bugs] #8606 [Stem]: Controller's extend_circuit() fails to remove temporary listeners

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#8606: Controller's extend_circuit() fails to remove temporary listeners
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 Reporter:  atagar  |          Owner:  atagar
     Type:  defect  |         Status:  new   
 Priority:  minor   |      Milestone:        
Component:  Stem    |        Version:        
 Keywords:          |         Parent:        
   Points:          |   Actualpoints:        
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Comment(by Desoxy):

 Unless I am missing something, option a has already been implemented by
 you when you added the await_build feature; there is a try..finally in
 Controller.extend_circuit() that removes the listener again if it exists.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/8606#comment:1>
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