ffmpeg: Global-buffer-overflow in stereo_processing

Project: https://git.ffmpeg.org/ffmpeg.git Detailed report: https://oss-fuzz.com/testcase?key=4957953339686912 Project: ffmpeg Fuzzer: libFuzzerffmpegAVCODECIDAACFIXEDfuzzer Job Type: libfuzzerasanffmpeg Platform Id: linux Crash Type: Global-buffer-overflow READ 4 Crash Address: 0x0000018bb420...