graphicsmagick/coder_BIGTIFF_fuzzer: Use-of-uninitialized-value in DisassociateAlphaRegion

Project: http://hg.code.sf.net/p/graphicsmagick/code Detailed report: https://oss-fuzz.com/testcase?key=4781271438852096 Project: graphicsmagick Fuzzer: libFuzzergraphicsmagickcoderBIGTIFFfuzzer Fuzz target binary: coderBIGTIFFfuzzer Job Type: libfuzzermsangraphicsmagick Platform Id: linux Crash...