[MacPorts] #67191: mpd does not build on (or for) macOS 13

[MacPorts]

#67191: mpd does not build on (or for) macOS 13
--------------------+--------------------
 Reporter:  colons  |      Owner:  (none)
     Type:  defect  |     Status:  new
 Priority:  Normal  |  Milestone:
Component:  ports   |    Version:  2.8.1
 Keywords:          |       Port:  mpd
--------------------+--------------------
 Any attempt to install a version of mpd that doesn't have a build in
 https://packages.macports.org/mpd/ (in my case, `sudo port install mpd
 +ffmpeg`) is failing.

 The build seems fine up until this error:

 {{{
 :info:build ../mpd-0.23.8/src/output/plugins/OSXOutputPlugin.cxx:163:3:
 error: use of undeclared identifier 'kAudioObjectPropertyElementMain'; did
 you mean 'kAudioObjectPropertyElementName'?
 :info:build                 kAudioObjectPropertyElementMain,
 :info:build                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 :info:build                 kAudioObjectPropertyElementName
 :info:build
 /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/CoreAudio.framework/Headers/AudioHardwareBase.h:331:5:
 note: 'kAudioObjectPropertyElementName' declared here
 :info:build     kAudioObjectPropertyElementName         = 'lchn',
 :info:build     ^
 }}}

 ...and then there are lots of other similar errors about the same
 undeclared identifier. I'll attach the whole log in case it helps.

-- 
Ticket URL: <https://trac.macports.org/ticket/67191>
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