[tor-bugs] #20389 [Core Tor/Tor]: Say 'Invalid argument' instead of unclear 'Unrecognized' in HSFETCH

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#20389: Say 'Invalid argument' instead of unclear 'Unrecognized' in HSFETCH
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 Reporter:  twim             |          Owner:
     Type:  defect           |         Status:  merge_ready
 Priority:  Medium           |      Milestone:  Tor: 0.3.0.x-final
Component:  Core Tor/Tor     |        Version:
 Severity:  Normal           |     Resolution:
 Keywords:  control, tor-hs  |  Actual Points:
Parent ID:                   |         Points:  0.1
 Reviewer:  dgoulet          |        Sponsor:  SponsorR-can
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Comment (by twim):

 It doesn't break controller clients anyhow, does it?

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/20389#comment:2>
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