[tor-bugs] #22424 [Core Tor/Tor]: Always check for usage underflows in the storage API

[Tor Bug Tracker & Wiki]

#22424: Always check for usage underflows in the storage API
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     Reporter:  teor          |      Owner:
         Type:  defect        |     Status:  new
     Priority:  Medium        |  Milestone:  Tor: 0.3.1.x-final
    Component:  Core Tor/Tor  |    Version:  Tor: 0.3.1.1-alpha
     Severity:  Normal        |   Keywords:
Actual Points:                |  Parent ID:
       Points:  0.2           |   Reviewer:
      Sponsor:                |
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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/22424>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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