Network class leaks _request variable

[Mike McCracken]

via valgrind:

==17330== 353 (4 direct, 349 indirect) bytes in 1 blocks are definitely lost in loss record 1,234 of 1,272
==17330== at 0x402A05C: operator new(unsigned int) (in /usr/lib/valgrind/vgpreload_memcheck-x86-linux.so)
==17330== by 0x45F14D4: UbuntuOne::Network::Network(QObject*) (network.cpp:38)
==17330== by 0x45EF91A: UbuntuOne::IdentityProvider::IdentityProvider(QObject*) (identityprovider.cpp:31)
==17330== by 0x45E329F: UbuntuOne::SSOService::SSOService(QObject*) (ssoservice.cpp:35)
==17330== by 0x4609906: ClickScope::DownloadManager::DownloadManager(QObject*) (download-manager.cpp:44)
==17330== by 0x8051F28: char TestRunner::RegisterTest<TestDownloadManager>(char*) (test_download_manager.h:101)
==17330== by 0x804D1AA: _GLOBAL__sub_I__ZN23TestableDownloadManager25setShouldSignalCredsFoundEb (test_download_manager.h:137)
==17330== by 0x8052E11: __libc_csu_init (in /home/mmccrack/src/unity-scope-click/cxx-dlmgr-tests/build/scope/tests/test-click-scope)
==17330== by 0x4732899: (below main) (libc-start.c:219)

from the code:

    /* either shared pointer or delete this */
    _nam = new QNetworkAccessManager(this);
    _request = new QNetworkRequest();

why not pass this as parent to QNetworkRequest?