imagemagick/encoder_png_fuzzer: Use-of-uninitialized-value in png_do_pack

Project: https://github.com/imagemagick/imagemagick.git Detailed report: https://oss-fuzz.com/testcase?key=5739060115537920 Project: imagemagick Fuzzer: libFuzzerimagemagickencoderpngfuzzer Fuzz target binary: encoderpngfuzzer Job Type: libfuzzermsanimagemagick Platform Id: linux Crash Type:...