graphicsmagick/coder_PICON_fuzzer: Use-of-uninitialized-value in Dither

Project: http://hg.code.sf.net/p/graphicsmagick/code Detailed report: https://oss-fuzz.com/testcase?key=5184380084420608 Project: graphicsmagick Fuzzer: libFuzzergraphicsmagickcoderPICONfuzzer Fuzz target binary: coderPICONfuzzer Job Type: libfuzzermsangraphicsmagick Platform Id: linux Crash Type...