[tor-bugs] #21312 [Obfuscation/Snowflake]: snowflake-client is pegged at 100% cpu

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#21312: snowflake-client is pegged at 100% cpu
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 Reporter:  arlolra                |          Owner:  arlolra
     Type:  defect                 |         Status:  needs_review
 Priority:  High                   |      Milestone:
Component:  Obfuscation/Snowflake  |        Version:
 Severity:  Major                  |     Resolution:
 Keywords:                         |  Actual Points:
Parent ID:                         |         Points:
 Reviewer:                         |        Sponsor:
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Comment (by arlolra):

 Thanks Yawning, that was instructive.

 > If you were having problems with multiple calls to Destroy(), changing
 the behavior from a nil pointer deref to a deadlock, is not what I would
 define as "happy".

 I only pasted the code show what I meant.  Unfortunately, I had to retype
 it since I'd already reset the changes and, in my haste, made that
 omission.  In other words, it wasn't what I was running.

 Anyways, I need attach a debugger and figure out why `Destroy()` is being
 called that third time.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/21312#comment:52>
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