imagemagick/encoder_pjpeg_fuzzer: Use-of-uninitialized-value in encode_mcu_DC_first

Project: https://github.com/imagemagick/imagemagick.git Detailed report: https://oss-fuzz.com/testcase?key=5712832717389824 Project: imagemagick Fuzzer: libFuzzerimagemagickencoderpjpegfuzzer Fuzz target binary: encoderpjpegfuzzer Job Type: libfuzzermsanimagemagick Platform Id: linux Crash Type:...