[MacPorts] #68178: rav1e: build fails due to git_allocator missing members

[MacPorts]

#68178: rav1e: build fails due to git_allocator missing members
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  Reporter:  lukaso  |      Owner:  mascguy
      Type:  defect  |     Status:  assigned
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:  2.8.1
Resolution:          |   Keywords:
      Port:  rav1e   |
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Comment (by lukaso):

 So it looks like these missing functions were removed in v1.7.1. So that's
 why we are stuffed. Also meaning they are not using semantic versioning
 (boo on them).
 https://github.com/libgit2/libgit2/commit/9dd1bfe81c3aba6ce35ed85bf62fa75d9c61e1a6.

 The solution is probably to revert libgit2 in macports. Clearly the build
 is not pulling the embedded version when it is linking (or so it seems).

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Ticket URL: <https://trac.macports.org/ticket/68178#comment:10>
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