imagemagick:encoder_pict_fuzzer: Use-of-uninitialized-value in ConvertRGBToCMYK

Detailed Report: https://oss-fuzz.com/testcase?key=5348241958895616 Project: imagemagick Fuzzing Engine: libFuzzer Fuzz Target: encoderpictfuzzer Job Type: libfuzzermsanimagemagick Platform Id: linux Crash Type: Use-of-uninitialized-value Crash Address: Crash State: ConvertRGBToCMYK...