graphicsmagick:enhance_fuzzer: Use-of-uninitialized-value in ReadHEIFImage

Project: http://hg.code.sf.net/p/graphicsmagick/code Detailed Report: https://oss-fuzz.com/testcase?key=5626355925712896 Project: graphicsmagick Fuzzing Engine: libFuzzer Fuzz Target: enhancefuzzer Job Type: libfuzzermsangraphicsmagick Platform Id: linux Crash Type: Use-of-uninitialized-value Cra...