[tor-bugs] #23030 [Core Tor/Tor]: Review coverity build warnings

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#23030: Review coverity build warnings
-------------------------------------------------+-------------------------
 Reporter:  nickm                                |          Owner:  nickm
     Type:  defect                               |         Status:
                                                 |  needs_review
 Priority:  Medium                               |      Milestone:  Tor:
                                                 |  0.3.2.x-final
Component:  Core Tor/Tor                         |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  029-backport 030-backport            |  Actual Points:  1
  031-backport coverity                          |
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
                                                 |  SponsorV-can
-------------------------------------------------+-------------------------
Changes (by nickm):

 * status:  accepted => needs_review
 * actualpoints:   => 1


Comment:

 My branch `bug23030_029` has a fix here. I think we should merge it at
 least into master.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/23030#comment:3>
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