[PostGIS] #5407: ptarray.c concerning warnings on mingw64

[PostGIS]

#5407: ptarray.c concerning warnings on mingw64
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  Reporter:  robe     |      Owner:  robe
      Type:  defect   |     Status:  new
  Priority:  medium   |  Milestone:  PostGIS 3.6.0
 Component:  postgis  |    Version:  master
Resolution:           |   Keywords:
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Changes (by robe):

 * milestone:  PostGIS 3.5.0 => PostGIS 3.6.0

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Ticket URL: <https://trac.osgeo.org/$(basename)s/ticket/5407#comment:4>
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