gdal: Incorrect-function-pointer-type in OGRSurface::CastToPolygon

Detailed report: https://oss-fuzz.com/testcase?key=5709498763182080

Project: gdal
Fuzzer: libFuzzer_gdal_ogr_fuzzer
Fuzz target binary: ogr_fuzzer
Job Type: libfuzzer_ubsan_gdal
Platform Id: linux

Crash Type: Incorrect-function-pointer-type
Crash Address:
Crash State:
OGRSurface::CastToPolygon
OGRMultiSurface::CastToMultiPolygon
GML2OGRGeometry_XMLNode_Internal

Sanitizer: undefined (UBSAN)

Recommended Security Severity: Medium

Regressed: https://oss-fuzz.com/revisions?job=libfuzzer_ubsan_gdal&range=201705131648:201705141650

Reproducer Testcase: https://oss-fuzz.com/download?testcase_id=5709498763182080

Issue filed automatically.

See https://github.com/google/oss-fuzz/blob/master/docs/reproducing.md for more information.

This bug is subject to a 90 day disclosure deadline. If 90 days elapse
without an upstream patch, then the bug report will automatically
become visible to the public.