zlib/example_dict_fuzzer: Use-of-uninitialized-value in slide_hash

Detailed report: https://oss-fuzz.com/testcase?key=5725547573805056 Project: zlib Fuzzer: libFuzzerzlibexampledictfuzzer Fuzz target binary: exampledictfuzzer Job Type: libfuzzermsanzlib Platform Id: linux Crash Type: Use-of-uninitialized-value Crash Address: Crash State: slidehash fillwindow...