oniguruma:fuzzer: Use-of-uninitialized-value in prs_exp

Detailed Report: https://oss-fuzz.com/testcase?key=6349358873247744 Project: oniguruma Fuzzing Engine: libFuzzer Fuzz Target: fuzzer Job Type: libfuzzermsanoniguruma Platform Id: linux Crash Type: Use-of-uninitialized-value Crash Address: Crash State: prsexp prsbranch prsalts Sanitizer: memory MS...