[PostGIS] #6092: fuzzingengine doesn't use hardening CPPFLAGS

[PostGIS]

#6092: fuzzingengine doesn't use hardening CPPFLAGS
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  Reporter:  Bas Couwenberg  |      Owner:  strk
      Type:  defect          |     Status:  new
  Priority:  medium          |  Milestone:  PostGIS 3.7.0
 Component:  build           |    Version:  master
Resolution:                  |   Keywords:
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Changes (by Bas Couwenberg):

 * Attachment "hardening.patch" added.

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Ticket URL: <https://trac.osgeo.org/postgis/ticket/6092>
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