mdbtools:fuzz_mdb: Crash in mdb_free_columns

Project: https://github.com/mdbtools/mdbtools.git Detailed Report: https://oss-fuzz.com/testcase?key=5693948895035392 Project: mdbtools Fuzzing Engine: libFuzzer Fuzz Target: fuzzmdb Job Type: libfuzzerubsanmdbtools Platform Id: linux Crash Type: UNKNOWN READ Crash Address: 0x0000003f3f47 Crash...