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

Project: https://github.com/imagemagick/imagemagick.git Detailed report: https://oss-fuzz.com/testcase?key=4670892001984512 Project: imagemagick Fuzzer: libFuzzerimagemagickencoderrlefuzzer Fuzz target binary: encoderrlefuzzer Job Type: libfuzzermsanimagemagick Platform Id: linux Crash Type:...