[tor-bugs] #20887 [Core Tor/Tor]: DIRCACHE_MIN_MB_BANDWIDTH does not stringify on FreeBSD, we should use %d instead

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#20887: DIRCACHE_MIN_MB_BANDWIDTH does not stringify on FreeBSD, we should use %d
instead
------------------------------+---------------------------------
     Reporter:  teor          |      Owner:
         Type:  defect        |     Status:  new
     Priority:  Medium        |  Milestone:  Tor: 0.3.???
    Component:  Core Tor/Tor  |    Version:  Tor: 0.2.8.1-alpha
     Severity:  Normal        |   Keywords:  easy intro refactor
Actual Points:                |  Parent ID:
       Points:                |   Reviewer:
      Sponsor:                |
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 A FreeBSD relay operator reports the message:
 {{{
 [WARN] Being a directory cache (default) with less than
 DIRCACHE_MIN_MB_BANDWIDTH MB of memory is not recommended and may consume
 most of the available resources, consider disabling this functionality by
 setting the DirCache option to 0
 }}}

 So we should print the macro value the same way we do every other value,
 using "%d" in the string, and passing it as an argument.

 This macro will change name in #20684.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/20887>
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