[MacPorts] #64396: [samba4] use of undeclared identifier 'O_CLOEXEC' in tdb_wrap.c

[MacPorts]

#64396: [samba4] use of undeclared identifier 'O_CLOEXEC' in tdb_wrap.c
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  Reporter:  BjarneDMat  |      Owner:  (none)
      Type:  defect      |     Status:  new
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:
Resolution:              |   Keywords:
      Port:  samba4      |
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Comment (by kencu):

 O_CLOEXEC is replaced by legacysupport

 https://github.com/macports/macports-legacy-
 support/blob/2a6500378e00f10c750193ec5a7e7c0bc8b5713e/include/sys/fcntl.h#L33

 so (IMHO) just use that

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Ticket URL: <https://trac.macports.org/ticket/64396#comment:9>
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