[MacPorts] #63849: openssl3 @3.0.0_2+universal fails build on 10.13.6

[MacPorts]

#63849: openssl3 @3.0.0_2+universal fails build on 10.13.6
------------------------+----------------------
  Reporter:  JohnFHall  |      Owner:  larryv
      Type:  defect     |     Status:  assigned
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:  2.7.1
Resolution:             |   Keywords:
      Port:  openssl3   |
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Comment (by TallTed):

 Same failure with
 ```openssl3-3.0.0_3+universal.darwin_15.i386-x86_64.tbz2``` on El Capitan
 10.11.6

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Ticket URL: <https://trac.macports.org/ticket/63849#comment:2>
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