imagemagick/crop_fuzzer: Use-of-uninitialized-value in CopyMagickString

Project: https://github.com/imagemagick/imagemagick.git Detailed report: https://oss-fuzz.com/testcase?key=5554905256296448 Project: imagemagick Fuzzer: libFuzzerimagemagickcropfuzzer Fuzz target binary: cropfuzzer Job Type: libfuzzermsanimagemagick Platform Id: linux Crash Type:...