libjpeg-turbo:compress_fuzzer: Use-of-uninitialized-value in get_gray_cmyk_row

Project: https://github.com/libjpeg-turbo/libjpeg-turbo.git Detailed Report: https://oss-fuzz.com/testcase?key=5679542338453504 Project: libjpeg-turbo Fuzzing Engine: libFuzzer Fuzz Target: compressfuzzer Job Type: libfuzzermsanlibjpeg-turbo Platform Id: linux Crash Type: Use-of-uninitialized-val...