imagemagick/encoder_vst_fuzzer: Use-of-uninitialized-value in ConstantString

Project: https://github.com/imagemagick/imagemagick.git Detailed report: https://oss-fuzz.com/testcase?key=5622706415337472 Project: imagemagick Fuzzer: libFuzzerimagemagickencodervstfuzzer Fuzz target binary: encodervstfuzzer Job Type: libfuzzermsanimagemagick Platform Id: linux Crash Type:...