[tor-bugs] #24150 [Core Tor/Tor]: Memory leak in v3 hsdesc parsing with empty encrypted data.

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#24150: Memory leak in v3 hsdesc parsing with empty encrypted data.
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     Reporter:  nickm         |      Owner:  nickm
         Type:  defect        |     Status:  assigned
     Priority:  Medium        |  Milestone:  Tor: 0.3.2.x-final
    Component:  Core Tor/Tor  |    Version:
     Severity:  Normal        |   Keywords:
Actual Points:                |  Parent ID:
       Points:                |   Reviewer:
      Sponsor:                |
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 When we get a v3 hsdesc where the decrypted part starts with a NUL byte,
 then decrypt_desc_layer will return 0, since the length of the output is
 0.  But "0" can also mean that there's an error in the
 decryption.

 Found with OSS-fuzz.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/24150>
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