imagemagick/ping_icon_fuzzer: Use-of-uninitialized-value in png_get_uint_31

Project: https://github.com/imagemagick/imagemagick.git Detailed report: https://oss-fuzz.com/testcase?key=4712420699275264 Project: imagemagick Fuzzer: libFuzzerimagemagickpingiconfuzzer Fuzz target binary: pingiconfuzzer Job Type: libfuzzermsanimagemagick Platform Id: linux Crash Type:...