imagemagick/encoder_miff_fuzzer: Use-of-uninitialized-value in WriteMIFFImage

Project: https://github.com/imagemagick/imagemagick.git Detailed report: https://oss-fuzz.com/testcase?key=5728395053760512 Project: imagemagick Fuzzer: libFuzzerimagemagickencodermifffuzzer Fuzz target binary: encodermifffuzzer Job Type: libfuzzermsanimagemagick Platform Id: linux Crash Type:...