[MacPorts] #64550: freeciv @2.6.6: at_quick_exit gives -Wimplicit-function-declaration warning, false positive

[MacPorts]

#64550: freeciv @2.6.6: at_quick_exit gives -Wimplicit-function-declaration
warning, false positive
----------------------+----------------------
  Reporter:  JDLH     |      Owner:  JDLH
      Type:  defect   |     Status:  assigned
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:  2.7.1
Resolution:           |   Keywords:
      Port:  freeciv  |
----------------------+----------------------

Comment (by JDLH):

 Created branch [https://github.com/JDLH/macports-ports/tree/64550-Add-
 at_quick_exit-to-10.14-whitelist 64550-Add-at_quick_exit-
 to-10.14-whitelist] to my fork of macports-ports, and Pull Request
 [https://github.com/macports/macports-ports/pull/13807 #13804 ''64550 Add
 'at_quick_exit' to 10.14 whitelist''].

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Ticket URL: <https://trac.macports.org/ticket/64550#comment:4>
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