expat: Use-of-uninitialized-value in lookup

Project: https://github.com/libexpat/libexpat.git Detailed report: https://oss-fuzz.com/testcase?key=5904513653276672 Project: expat Fuzzer: libFuzzerexpatparseUTF16fuzzer Fuzz target binary: parseUTF16fuzzer Job Type: libfuzzermsanexpat Platform Id: linux Crash Type: Use-of-uninitialized-value...