[PostGIS] #5977: WARNING: nonstandard use of escape in a string literal

[PostGIS]

#5977: WARNING:  nonstandard use of escape in a string literal
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  Reporter:  strk          |      Owner:  strk
      Type:  defect        |     Status:  new
  Priority:  medium        |  Milestone:  PostGIS 3.3.9
 Component:  upgrade/soft  |    Version:  3.3.x
Resolution:                |   Keywords:
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Changes (by strk):

 * milestone:  PostGIS 3.6.0 => PostGIS 3.3.9
 * version:  master => 3.3.x

Comment:

 The bug exists at least since 3.3.9dev - I wasn't able to test older
 versions because they require an older PostgreSQL that I don't have out of
 the box. I could leave older versions untouched for now
-- 
Ticket URL: <https://trac.osgeo.org/postgis/ticket/5977#comment:2>
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