cpython3:fuzz_json_loads: Use-of-uninitialized-value in mark_stacks

Project: https://github.com/python/cpython.git Detailed Report: https://oss-fuzz.com/testcase?key=5445337833865216 Project: cpython3 Fuzzing Engine: libFuzzer Fuzz Target: fuzzjsonloads Job Type: libfuzzermsancpython3 Platform Id: linux Crash Type: Use-of-uninitialized-value Crash Address: Crash...