ffmpeg:ffmpeg_dem_W64_fuzzer: Use-of-uninitialized-value in w64_read_header

Project: https://git.ffmpeg.org/ffmpeg.git Detailed Report: https://oss-fuzz.com/testcase?key=5212907590189056 Project: ffmpeg Fuzzing Engine: libFuzzer Fuzz Target: ffmpegdemW64fuzzer Job Type: libfuzzermsanffmpeg Platform Id: linux Crash Type: Use-of-uninitialized-value Crash Address: Crash...