llvm:clang-fuzzer: Segv on unknown address in clang::LookupResult::sanity

Detailed Report: https://oss-fuzz.com/testcase?key=4872329519955968 Project: llvm Fuzzing Engine: libFuzzer Fuzz Target: clang-fuzzer Job Type: libfuzzermsanllvm Platform Id: linux Crash Type: Segv on unknown address Crash Address: Crash State: clang::LookupResult::sanity...