imagemagick:encoder_jxl_fuzzer: Use-of-uninitialized-value in jxl::PerformMulBlending

Project: https://github.com/imagemagick/imagemagick.git Detailed Report: https://oss-fuzz.com/testcase?key=6299345553784832 Project: imagemagick Fuzzing Engine: libFuzzer Fuzz Target: encoderjxlfuzzer Job Type: libfuzzermsanimagemagick Platform Id: linux Crash Type: Use-of-uninitialized-value Cra...