kimageformats:kimgio_avif_fuzzer: Use-of-uninitialized-value in av1_highbd_iwht4x4_16_add_c

Project: git://anongit.kde.org/kimageformats Detailed Report: https://oss-fuzz.com/testcase?key=4834088829714432 Project: kimageformats Fuzzing Engine: libFuzzer Fuzz Target: kimgioaviffuzzer Job Type: libfuzzermsankimageformats Platform Id: linux Crash Type: Use-of-uninitialized-value Crash...