harfbuzz: Index-out-of-bounds in OT::ContextFormat3::sanitize

Project: https://github.com/harfbuzz/harfbuzz.git Detailed report: https://oss-fuzz.com/testcase?key=4769173588672512 Project: harfbuzz Fuzzer: libFuzzerharfbuzzhb-fuzzer Fuzz target binary: hb-fuzzer Job Type: libfuzzerubsanharfbuzz Platform Id: linux Crash Type: Index-out-of-bounds Crash Addres...