ffmpeg: Index-out-of-bounds in decode_unit

Project: https://git.ffmpeg.org/ffmpeg.git Detailed report: https://oss-fuzz.com/testcase?key=5286680976162816 Project: ffmpeg Fuzzer: libFuzzerffmpegAVCODECIDSCPRfuzzer Fuzz target binary: ffmpegAVCODECIDSCPRfuzzer Job Type: libfuzzerubsanffmpeg Platform Id: linux Crash Type: Index-out-of-bounds...