graphicsmagick:coder_JNG_fuzzer: Use-of-uninitialized-value in png_handle_eXIf

Project: http://hg.code.sf.net/p/graphicsmagick/code Detailed Report: https://oss-fuzz.com/testcase?key=6603240378073088 Project: graphicsmagick Fuzzing Engine: libFuzzer Fuzz Target: coderJNGfuzzer Job Type: libfuzzermsangraphicsmagick Platform Id: linux Crash Type: Use-of-uninitialized-value...