[tor-bugs] #21278 [Core Tor/Tor]: Avoid signed integer underflow when comparing versions (Fix TROVE-2017-001)

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#21278: Avoid signed integer underflow when comparing versions (Fix TROVE-2017-001)
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 Reporter:  nickm         |          Owner:  nickm
     Type:  defect        |         Status:  needs_revision
 Priority:  Medium        |      Milestone:  Tor: 0.3.0.x-final
Component:  Core Tor/Tor  |        Version:
 Severity:  Normal        |     Resolution:
 Keywords:  029-backport  |  Actual Points:
Parent ID:                |         Points:
 Reviewer:                |        Sponsor:
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Comment (by teor):

 (After the nitpicks are fixed or ignored, I'm happy for this to go into
 marge-ready.)

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/21278#comment:13>
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