SXF: fix potential problem on Linux 64bit where long is 64 bit (#4331)

git-svn-id: https://svn.osgeo.org/gdal/trunk@26767 f0d54148-0727-0410-94bb-9a71ac55c965
SXF: fix so that GetNextFeature() works directly (fix ogrinfo -q) (#4331)

git-svn-id: https://svn.osgeo.org/gdal/trunk@26768 f0d54148-0727-0410-94bb-9a71ac55c965