clickhouse:codegen_select_fuzzer: Use-of-uninitialized-value in DB::IAST::~IAST

Project: https://github.com/ClickHouse/ClickHouse.git Detailed Report: https://oss-fuzz.com/testcase?key=4544949383462912 Project: clickhouse Fuzzing Engine: libFuzzer Fuzz Target: codegenselectfuzzer Job Type: libfuzzermsanclickhouse Platform Id: linux Crash Type: Use-of-uninitialized-value Cras...