[pschweitzer] 54459: [KERNEL32] Properly fix GetEnvironmentVariableW and set error in case of RtlInitUnicodeStringEx failure

Author: pschweitzer
Date: Sun Nov 20 17:00:39 2011
New Revision: 54459

URL: http://svn.reactos.org/svn/reactos?rev=54459&view=rev
Log:
[KERNEL32]
Properly fix GetEnvironmentVariableW and set error in case of RtlInitUnicodeStringEx
failure

Modified:
    trunk/reactos/dll/win32/kernel32/client/environ.c

Modified: trunk/reactos/dll/win32/kernel32/client/environ.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/dll/win32/kernel32/client/…
==============================================================================
--- trunk/reactos/dll/win32/kernel32/client/environ.c [iso-8859-1] (original)
+++ trunk/reactos/dll/win32/kernel32/client/environ.c [iso-8859-1] Sun Nov 20 17:00:39
2011
@@ -181,24 +181,28 @@
     {
         UniSize = UNICODE_STRING_MAX_BYTES - sizeof(UNICODE_NULL);
     }
+    
+    Status = RtlInitUnicodeStringEx(&VarName, lpName);
+    if (!NT_SUCCESS(Status))
+    {
+        BaseSetLastNTError(Status);
+        return 0;
+    }
 
     RtlInitEmptyUnicodeString(&VarValue, lpBuffer, UniSize);
-    Status = RtlInitUnicodeStringEx(&VarName, lpName);
-    if (NT_SUCCESS(Status))
-    {
-        Status = RtlQueryEnvironmentVariable_U(NULL, &VarName, &VarValue);
-        if (!NT_SUCCESS(Status))
-        {
-            if (Status == STATUS_BUFFER_TOO_SMALL)
-            {
-                return (VarValue.Length / sizeof(WCHAR)) + sizeof(ANSI_NULL);
-            }
-            BaseSetLastNTError (Status);
-            return 0;
-        }
-
-        lpBuffer[VarValue.Length / sizeof(WCHAR)] = UNICODE_NULL;
-    }
+
+    Status = RtlQueryEnvironmentVariable_U(NULL, &VarName, &VarValue);
+    if (!NT_SUCCESS(Status))
+    {
+        if (Status == STATUS_BUFFER_TOO_SMALL)
+        {
+            return (VarValue.Length / sizeof(WCHAR)) + sizeof(ANSI_NULL);
+        }
+        BaseSetLastNTError (Status);
+        return 0;
+    }
+
+    lpBuffer[VarValue.Length / sizeof(WCHAR)] = UNICODE_NULL;
 
     return (VarValue.Length / sizeof(WCHAR));
 }