graphicsmagick:coder_BIGTIFF_fuzzer: Use-of-uninitialized-value in AssociateAlphaRegion

Project: http://hg.code.sf.net/p/graphicsmagick/code Detailed Report: https://oss-fuzz.com/testcase?key=4654776928567296 Project: graphicsmagick Fuzzing Engine: libFuzzer Fuzz Target: coderBIGTIFFfuzzer Job Type: libfuzzermsangraphicsmagick Platform Id: linux Crash Type: Use-of-uninitialized-valu...