[MacPorts] #64037: openssl3: build failure on macOS 10.8

[MacPorts]

#64037: openssl3: build failure on macOS 10.8
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  Reporter:  mascguy   |      Owner:  cjones051073
      Type:  defect    |     Status:  assigned
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:  2.7.1
Resolution:            |   Keywords:
      Port:  openssl3  |
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Comment (by RobK88):

 FYI -- `openssl3 @3.3.2_0` also fails to build on Lion (10.7.5) with the
 same error

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Ticket URL: <https://trac.macports.org/ticket/64037#comment:10>
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