lua:string_len_test: Crash in arena_for_chunk

Detailed Report: https://oss-fuzz.com/testcase?key=5366776207835136 Project: lua Fuzzing Engine: libFuzzer Fuzz Target: stringlentest Job Type: libfuzzerasanlua Platform Id: linux Crash Type: UNKNOWN READ Crash Address: 0x776068000000 Crash State: arenaforchunk arenaforchunk cfree Sanitizer:...