[tor-bugs] #34078 [Core Tor/Tor]: Fix compilation warnings with clang 10.0.0

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#34078: Fix compilation warnings with clang 10.0.0
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 Reporter:  nickm         |          Owner:  nickm
     Type:  defect        |         Status:  merge_ready
 Priority:  Medium        |      Milestone:  Tor: 0.4.4.x-final
Component:  Core Tor/Tor  |        Version:
 Severity:  Normal        |     Resolution:
 Keywords:                |  Actual Points:  1
Parent ID:                |         Points:
 Reviewer:                |        Sponsor:
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Comment (by nickm):

 I think that's also causing a spurious failure in master.  I'll fix it,
 validate CI, and merge.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/34078#comment:12>
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