Logically dead code

The indicated dead code may have performed some action; that action will never occur. Code can never be reached because of a logical contradiction
/src/mongo/db/query/sbe_stage_builder_expression.cpp:1413: DEADCODE 122748 Condition "eIsoWeekYear.operator bool()", taking true branch. Now the value of "eIsoWeekYear" is not "nullptr".
/src/mongo/db/query/sbe_stage_builder_expression.cpp:1520: DEADCODE 122748 At condition "eIsoWeekYear.operator bool()", the value of "eIsoWeekYear" cannot be "nullptr".
/src/mongo/db/query/sbe_stage_builder_expression.cpp:1520: DEADCODE 122748 The condition "!eIsoWeekYear.operator bool()" cannot be true.
/src/mongo/db/query/sbe_stage_builder_expression.cpp:1521: DEADCODE 122748 Execution cannot reach the expression "(eIsoWeekYear) = (std::unique_ptr<mongo::sbe::EExpression, std::default_delete<mongo::sbe::EExpression> >(mongo::sbe::makeE(mongo::sbe::value::TypeTags(mongo::sbe::value::TypeTags::NumberInt32), mongo::sbe::value::Value(mongo::sbe::value::bitcastFrom(1970)))))" inside this statement: "(eIsoWeekYear) = (std::uniq...".