[MacPorts] #61307: ghostscript 9.52 fails to build on macOS 10.13.6

[MacPorts]

#61307: ghostscript 9.52 fails to build on macOS 10.13.6
----------------------+-------------------------
 Reporter:  bK4gYuRo  |      Owner:  (none)
     Type:  defect    |     Status:  new
 Priority:  Normal    |  Milestone:
Component:  ports     |    Version:  2.6.3
 Keywords:            |       Port:  ghostscript
----------------------+-------------------------
 The log looks similar to the one in ticket #61306
 {{{
 :info:build ./base/fapi_ft.c:129:1: error: expected function body after
 function declarator
 :info:build FF_alloc(FT_Memory memory, long size)
 :info:build ^
 :info:build ./base/fapi_ft.c:236:34: error: use of undeclared identifier
 'file_default_buffer_size'
 :info:build                                  file_default_buffer_size,
 &ps, pfn.iodev,
 :info:build                                  ^
 :info:build ./base/fapi_ft.c:259:20: error: use of undeclared identifier
 'FF_stream_read'
 :info:build     ftstrm->read = FF_stream_read;
 :info:build                    ^
 :info:build ./base/fapi_ft.c:260:21: error: use of undeclared identifier
 'FF_stream_close'
 :info:build     ftstrm->close = FF_stream_close;
 :info:build                     ^
 }}}

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Ticket URL: <https://trac.macports.org/ticket/61307>
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