[PostGIS] #5610: ST_SetPoint on a line with NaN Z values

[PostGIS]

#5610: ST_SetPoint on a line with NaN Z values
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  Reporter:  3nids    |      Owner:  pramsey
      Type:  defect   |     Status:  new
  Priority:  medium   |  Milestone:  PostGIS 3.4.2
 Component:  postgis  |    Version:  3.4.x
Resolution:           |   Keywords:
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Comment (by robe):

 I took a closer look at this and traced it back to a commit I made, to
 prevent a crash

 in #5319

 I'm deliberating if there is a better solution.  I was just assuming these
 strange things happen not intentionally as I couldn't think of a purpose
 of why one would need to do this.
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Ticket URL: <https://trac.osgeo.org/postgis/ticket/5610#comment:5>
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