[MacPorts] #71049: openjdk21 @21.0.4+7: error: use of undeclared identifier 'NSBundleExecutableArchitectureARM64' on 10.14 and 10.15

[MacPorts]

#71049: openjdk21 @21.0.4+7: error: use of undeclared identifier
'NSBundleExecutableArchitectureARM64' on 10.14 and 10.15
----------------------------------+-----------------------------
  Reporter:  sambthompson         |      Owner:  breun
      Type:  defect               |     Status:  assigned
  Priority:  Normal               |  Milestone:
 Component:  ports                |    Version:  2.10.2
Resolution:                       |   Keywords:  catalina mojave
      Port:  openjdk21 openjdk17  |
----------------------------------+-----------------------------

Comment (by breun):

 Thanks for the PR, Sam, I merged it.

 I've now also adjusted the `platforms` line for `opendjk21` to indicate
 that building should succeed on macOS 10.12.0+, because I noticed that
 wasn't included in the PR.

-- 
Ticket URL: <https://trac.macports.org/ticket/71049#comment:14>
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