ASSERT (racecheck_unittest-windows-x86-O0.exe) utils.c:944 lock->lock_requests == LOCK_FREE_STATE

_From [bruen...@google.com](https://code.google.com/u/109494838902877177630/) on May 22, 2013 12:18:41_

http://build.chromium.org/p/client.drmemory/builders/win-7_x64-drm/builds/3196/steps/dbg%20full%20TSan%20tests/logs/stdio xref https://code.google.com/p/drmemory/issues/detail?id=715
lock_requests == LOCK_FREE_STATE
(Error occurred @23094 frags)
version 4.0.2085, custom build
-logdir 'E:\b\build\slave\win-7_x64-drm\build\build_drmemory-dbg-32\logs\dynamorio' -client_lib 'E:\b\build\slave\win-7_x64-drm\build\build_drmemory-dbg-32\bin\debug\drmemorylib.dll;0;`-results_to_stderr` -suppress `E:\b\build\slave\win-7_x64-drm\drmemory\tests\app_suite\default-suppressions.txt` -logdir `E:\b\build\slave\win-7_x64-drm\build\build_drmemory-dbg-32\logs` -resfile 1
0x1928e358 0x6aa030f4
0x1928e490 0x6aa05837
0x1928e4c0 0x6ab8af3c
0x1928e4cc 0x739782ea
0x1928e4d8 0x7398103e
0x1928e500 0x7398de56
0x1928e554 0x73a17fb2
0x1928e58c 0x73a17fe6
0x1928e5cc 0x73a17c9b
0x1928e60c 0x7398db56
0x1928e628 0x73980ea8
0x1928e72c 0x7392e9f2
0x1928e774 0x739b0c64
0x1928e77c 0x7380b725
0x1928e7ac 0x6ab853f3
E:\b\build\slave\win-7_x64-drm\build\build_drmemory-dbg-32\bin\debug\drmemorylib.dll=0x73800000
E:\b\build\slave\win-7_x64-drm\build\build_drmemory-dbg-32\bin\debug/dbghelp.dll=0x6cc70000
C:\Windows/system32/msvcrt.dll=0x00310000
C:\Windows/system32/KERNEL32.dll=0x0c5e0000
C:\Windows/system32/KERNELBASE.dll=0x001b0000>

_Original issue: http://code.google.com/p/dynamorio/issues/detail?id=1166_