libultrahdr:ultrahdr_enc_fuzzer: Use-of-uninitialized-value in ultrahdr::uhdr_gainmap_metadata_frac::encodeGainmapMetadata

Project: https://github.com/google/libultrahdr.git Detailed Report: https://oss-fuzz.com/testcase?key=4823210674159616 Project: libultrahdr Fuzzing Engine: libFuzzer Fuzz Target: ultrahdrencfuzzer Job Type: libfuzzermsanlibultrahdr Platform Id: linux Crash Type: Use-of-uninitialized-value Crash...