[dchapyshev] 38682: - Fix GetEnvironmentVariableW. This fixed also 4 wine tests for OpenFile and SearchPathA/W

Author: dchapyshev
Date: Sat Jan 10 11:50:03 2009
New Revision: 38682

URL: http://svn.reactos.org/svn/reactos?rev=38682&view=rev
Log:
- Fix GetEnvironmentVariableW. This fixed also 4 wine tests for OpenFile and
SearchPathA/W

Modified:
    trunk/reactos/dll/win32/kernel32/misc/env.c

Modified: trunk/reactos/dll/win32/kernel32/misc/env.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/dll/win32/kernel32/misc/en…
==============================================================================
--- trunk/reactos/dll/win32/kernel32/misc/env.c [iso-8859-1] (original)
+++ trunk/reactos/dll/win32/kernel32/misc/env.c [iso-8859-1] Sat Jan 10 11:50:03 2009
@@ -139,7 +139,7 @@
 	                      lpName);
 
 	VarValue.Length = 0;
-	VarValue.MaximumLength = (USHORT)(nSize != 0 ? (nSize - 1) * sizeof(WCHAR) : 0);
+	VarValue.MaximumLength = (USHORT) (nSize ? nSize - 1 : 0) * sizeof(WCHAR);
 	VarValue.Buffer = lpBuffer;
 
 	Status = RtlQueryEnvironmentVariable_U (NULL,
@@ -147,13 +147,13 @@
 	                                        &VarValue);
 	if (!NT_SUCCESS(Status))
 	{
-		SetLastErrorByStatus (Status);
 		if (Status == STATUS_BUFFER_TOO_SMALL)
 		{
 			return (VarValue.Length / sizeof(WCHAR)) + 1;
 		}
 		else
 		{
+			SetLastErrorByStatus (Status);
 			return 0;
 		}
 	}
@@ -162,7 +162,7 @@
         {
             /* make sure the string is NULL-terminated! RtlQueryEnvironmentVariable_U
                only terminates it if MaximumLength < Length */
-	    VarValue.Buffer[VarValue.Length / sizeof(WCHAR)] = L'\0';
+	    lpBuffer[VarValue.Length / sizeof(WCHAR)] = L'\0';
 	}
 
 	return (VarValue.Length / sizeof(WCHAR));