[tor-bugs] #17655 [Tor]: Minor comment fixes to Tor master

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#17655: Minor comment fixes to Tor master
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     Reporter:  teor     |      Owner:
         Type:  defect   |     Status:  new
     Priority:  Low      |  Milestone:  Tor: 0.2.8.x-final
    Component:  Tor      |    Version:  Tor: unspecified
     Severity:  Trivial  |   Keywords:
Actual Points:           |  Parent ID:
       Points:           |    Sponsor:
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 Please merge my branch comments-20151123 from
 https://github.com/teor2345/tor.git

 It fixes up 3 minor comment typos from different areas of the codebase in
 3 separate commits.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/17655>
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