PG: fix OGRPGTableLayer::ResolveSRID() when the current user has no select rights on geometry_columns table (#5131)

git-svn-id: https://svn.osgeo.org/gdal/trunk@26507 f0d54148-0727-0410-94bb-9a71ac55c965
Merge branch 'trunk' into trunk_travis_macosx