etcd:fuzz_purge_file: Crash with empty stacktrace

Detailed Report: https://oss-fuzz.com/testcase?key=5995558904659968 Project: etcd Fuzzing Engine: libFuzzer Fuzz Target: fuzzpurgefile Job Type: libfuzzerasanetcd Platform Id: linux Crash Type: UNKNOWN WRITE Crash Address: 0x7fe2e52cc0dd Crash State: NULL Sanitizer: address ASAN Recommended...