gdal/cad_fuzzer: Crash in std::__1::to_string

Project: https://github.com/OSGeo/gdal.git Detailed report: https://oss-fuzz.com/testcase?key=5640476095938560 Project: gdal Fuzzer: libFuzzergdalcadfuzzer Fuzz target binary: cadfuzzer Job Type: libfuzzerubsangdal Platform Id: linux Crash Type: UNKNOWN WRITE Crash Address: 0x0f80000ff414 Crash...