freetype2:cff: Use-of-uninitialized-value in tt_apply_mvar

Detailed Report: https://oss-fuzz.com/testcase?key=5872154513637376 Project: freetype2 Fuzzing Engine: libFuzzer Fuzz Target: cff Job Type: libfuzzermsanfreetype2 Platform Id: linux Crash Type: Use-of-uninitialized-value Crash Address: Crash State: ttapplymvar cffmetricsadjust...