Memory leak below RtlInitOutOfProcessMemoryStream on Vista

_From [timurrrr@google.com](https://code.google.com/u/timurrrr@google.com/) on May 05, 2011 10:09:14_

http://build.chromium.org/p/client.drmemory/builders/win-vista_x64-drm/builds/948/steps/Run%20TSan%20tests/logs/summary%3A%202%20report%28s%29 0x77ca081d ntdll.dll!RtlInitOutOfProcessMemoryStream
0x77c5d6f4 ntdll.dll!RtlInitializeCriticalSection
racecheck_unittest-windows-x86-O0.exe!Mutex::Mutex
thread_wrappers_win.h:82
racecheck_unittest-windows-x86-O0.exe!StressTests_ManyLockSetsTest::StressTests_ManyLockSetsTest_Test::TestBody
racecheck_unittest.cc:1438

This is a test https://code.google.com/p/data-race-test/source/browse/trunk/unittest/racecheck_unittest.cc?spec=svn3420&r=3413#1415 which allocates-deallocates 13 mutexes and does 2^13 Lock-Unlocks on them from two different threads.

Not sure how it could cause some extra leak.
// Maybe symbols are wrong again?

_Original issue: http://code.google.com/p/drmemory/issues/detail?id=385_