imagemagick/huffman_decode_fuzzer: Use-of-uninitialized-value in ReadPGXImage

Project: https://github.com/imagemagick/imagemagick.git Detailed report: https://oss-fuzz.com/testcase?key=5828212144734208 Project: imagemagick Fuzzer: libFuzzerimagemagickhuffmandecodefuzzer Fuzz target binary: huffmandecodefuzzer Job Type: libfuzzermsanimagemagick Platform Id: linux Crash Type...