If the variable does not exist, just return.
[wine] / dlls / psapi / psapi_main.c
2005-01-20  Hans LeidekkerStub implementations for EnumPageFiles{A,W}, GetProcess...
2004-06-15  Stefan LeichterMoved implementation of GetModuleBaseName from ascii...
2004-05-19  Eric PouechGetModuleFileName[AW] doesn't terminate the string...
2003-12-01  Kevin KoltzauExport QueryWorkingSet.
2003-09-30  Alexandre JulliardStore module names in Unicode in the server.
2003-09-05  Alexandre JulliardFixed header dependencies to be fully compatible with...
2003-04-03  Michael StefaniucAdd some missing HeapFree's and one missing free.
2003-01-09  Eric PouechImplemented GetModuleBaseName(AW), GetModuleFileNameEx...
2002-10-22  Michael StefaniucCompile the psapi dll with STRICT defined.
2002-05-31  Vincent BéronRemoved trailing whitespace.
2002-03-22  Hidenori TakeshimaImplemented EnumProcesses and EnumProcessModules.
2002-03-09  Alexandre JulliardAdded LGPL standard comment, and copyright notices...
2001-05-09  Francois GougetAdd '\n' at the end of traces.
2001-01-25  Patrik StridvallDocumentation ordinal fixes.
2000-11-27  Dimitrie O. PaunRequire {DECLARE,DEFAULT}_DEBUG_CHANNEL statements...
2000-03-28  Patrik StridvallAdded/fixed some documentation reported by winapi_check.
1999-05-14  Alexandre JulliardConverted to the new debug interface, using script...
1999-04-19  Patrik StridvallNew debug scheme with explicit debug channels declaration.
1999-03-14  Jim AstonRenamed wintypes.h to windef.h.
1999-02-26  Alexandre JulliardLarge-scale renaming of all Win32 functions and types...
1999-02-17  Marcus MeissnerOptimized include/*.h: (recursively) include all header...
1998-09-27  Alexandre JulliardRelease 980927 wine-980927