pgsql: Allow single-point polygons to be converted to circles

Allow single-point polygons to be converted to circles

This allows finding the center of a single-point polygon and converting
it to a point.

Per report from Josef Grahn

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/423f69ab64a6e51fbdd97a83c1dc55d68ca6190d

Modified Files
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src/backend/utils/adt/geo_ops.c | 7 +------
1 file changed, 1 insertion(+), 6 deletions(-)

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