QPromise::addResult() leaks memory

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==20131==ERROR: LeakSanitizer: detected memory leaksDirect leak of 4 byte(s) in 1 object(s) allocated from:
    #0 0x7f970648d448 in operator new(unsigned long) (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xe0448)
    #1 0x559734874f10 in int QtPrivate::ResultStoreBase::addResult<int>(int, int const*) /media/sda/work/cmake_build_prepend_optimization/qtbase/include/QtCore/../../../../../../../home/ag/work/qt5/qtbase/src/corelib/thread/qresultstore.h:161
    #2 0x55973486df47 in QFutureInterface<int>::reportResult(int const*, int) /media/sda/work/cmake_build_prepend_optimization/qtbase/include/QtCore/../../../../../../../home/ag/work/qt5/qtbase/src/corelib/thread/qfutureinterface.h:273
    #3 0x559734867bc4 in QFutureInterface<int>::reportResult(int const&, int) /media/sda/work/cmake_build_prepend_optimization/qtbase/include/QtCore/../../../../../../../home/ag/work/qt5/qtbase/src/corelib/thread/qfutureinterface.h:302
    #4 0x5597348613fc in void QPromise<int>::addResult<int&, void, void>(int&, int) /media/sda/work/cmake_build_prepend_optimization/qtbase/include/QtCore/../../../../../../../home/ag/work/qt5/qtbase/src/corelib/thread/qpromise.h:94
    #5 0x5597347ea20a in tst_QPromise::addResult() /home/ag/work/qt5/qtbase/tests/auto/corelib/thread/qpromise/tst_qpromise.cpp:174
    #6 0x5597347f610a in tst_QPromise::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) /media/sda/work/cmake_build_prepend_optimization/qtbase/tests/auto/corelib/thread/qpromise/tst_qpromise_autogen/include/tst_qpromise.moc:134
    #7 0x7f9704c67c0f in QMetaMethod::invoke(QObject*, Qt::ConnectionType, QGenericReturnArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument) const /home/ag/work/qt5/qtbase/src/corelib/kernel/qmetaobject.cpp:2316
    #8 0x7f970606df92 in QMetaMethod::invoke(QObject*, Qt::ConnectionType, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument) const (/media/sda/work/cmake_build_prepend_optimization/qtbase/lib/libQt6Test.so.6+0xbdf92)
    #9 0x7f970605acb1 in QTest::TestMethods::invokeTestOnData(int) const /home/ag/work/qt5/qtbase/src/testlib/qtestcase.cpp:934
    #10 0x7f970605cd88 in QTest::TestMethods::invokeTest(int, char const*, QTest::WatchDog*) const /home/ag/work/qt5/qtbase/src/testlib/qtestcase.cpp:1163
    #11 0x7f9706060351 in QTest::TestMethods::invokeTests(QObject*) const /home/ag/work/qt5/qtbase/src/testlib/qtestcase.cpp:1506
    #12 0x7f9706061a30 in QTest::qRun() /home/ag/work/qt5/qtbase/src/testlib/qtestcase.cpp:1933
    #13 0x7f9706060cc4 in QTest::qExec(QObject*, int, char**) /home/ag/work/qt5/qtbase/src/testlib/qtestcase.cpp:1841
    #14 0x5597347f5fc2 in main /home/ag/work/qt5/qtbase/tests/auto/corelib/thread/qpromise/tst_qpromise.cpp:606
    #15 0x7f9703e64b96 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21b96)
SUMMARY: AddressSanitizer: 4 byte(s) leaked in 1 allocation(s).

promise.addResult(42);
promise.addResult(43, 0);  // what happens with stored 42?