freetype2/cff-ftengine: Crash in cff_decoder_parse_charstrings

Detailed report: https://oss-fuzz.com/testcase?key=5709686410575872 Project: freetype2 Fuzzer: libFuzzerfreetype2cff-ftengine Fuzz target binary: cff-ftengine Job Type: libfuzzerasanfreetype2 Platform Id: linux Crash Type: UNKNOWN READ Crash Address: 0x7fa03f210910 Crash State:...