dlplibs/pdbfuzzer: Heap-buffer-overflow in ucnv_UTF8FromUTF8

Detailed report: https://oss-fuzz.com/testcase?key=4652788958101504 Project: dlplibs Fuzzer: libFuzzerdlplibspdbfuzzer Fuzz target binary: pdbfuzzer Job Type: libfuzzerasandlplibs Platform Id: linux Crash Type: Heap-buffer-overflow WRITE 1 Crash Address: 0x6040000000f3 Crash State: ucnvUTF8FromUT...