[MacPorts] #67553: abseil: builds failing for 10.10 and 10.11

[MacPorts]

#67553: abseil: builds failing for 10.10 and 10.11
---------------------+----------------------
 Reporter:  mascguy  |      Owner:  judaew
     Type:  defect   |     Status:  assigned
 Priority:  Normal   |  Milestone:
Component:  ports    |    Version:  2.8.1
 Keywords:           |       Port:  abseil
---------------------+----------------------
 Details:

 {{{
 [ 73%] Building CXX object
 absl/strings/CMakeFiles/cord_internal.dir/internal/cord_rep_btree.cc.o

 .../work/abseil-cpp-20230125.3/absl/synchronization/mutex.cc:2791:44:
 error: default initialization of an object of const type 'const
 absl::lts_20230125::Condition' without a user-provided default constructor
 ABSL_CONST_INIT const Condition Condition::kTrue;
                                            ^
 }}}

 https://ports.macports.org/port/abseil/details/

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Ticket URL: <https://trac.macports.org/ticket/67553>
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