go-ethereum:fuzzDifficulty: Crash with empty stacktrace

Detailed Report: https://oss-fuzz.com/testcase?key=4909921536180224 Project: go-ethereum Fuzzing Engine: libFuzzer Fuzz Target: fuzzDifficulty Job Type: libfuzzerasango-ethereum Platform Id: linux Crash Type: UNKNOWN READ Crash Address: 0x000024269e40 Crash State: NULL Sanitizer: address ASAN...