An internal pointer of a wrapper object remains available after the object is freed

Defect 101837 (STATIC_C)
Checker WRAPPER_ESCAPE (subcategory none)
File: /src/mongo/s/config_server_test_fixture.cpp
Function mongo::ConfigServerTestFixture::setUp()
/src/mongo/s/config_server_test_fixture.cpp, line: 118
The internal representation of local "specialExec" escapes into "this->_executorForAddShard", but is destroyed when it exits scope.

            _executorForAddShard = specialExec.get();