Don't always return STATUS_BUFFER_TOO_SMALL when an error occurs in ZwQueryValueKey.
The "if" was triggered because ValueInformation->DataLength is 0xcdcdcdcd at the return of the function

Modified: trunk/reactos/ntoskrnl/io/pnpmgr.c

--- trunk/reactos/ntoskrnl/io/pnpmgr.c	2005-10-14 13:00:18 UTC (rev 18441)
+++ trunk/reactos/ntoskrnl/io/pnpmgr.c	2005-10-14 13:04:11 UTC (rev 18442)
@@ -322,15 +322,18 @@

         *ResultLength = ValueInformation->DataLength;
         ZwClose(KeyHandle);
 

-        if (ValueInformation->DataLength > BufferLength)
-          Status = STATUS_BUFFER_TOO_SMALL;
-

         if (!NT_SUCCESS(Status))
         {
           ExFreePool(ValueInformation);
           return Status;
         }
 

+        if (ValueInformation->DataLength > BufferLength)
+        {
+          ExFreePool(ValueInformation);
+          return STATUS_BUFFER_TOO_SMALL;
+        }
+

         /* FIXME: Verify the value (NULL-terminated, correct format). */
 
         RtlCopyMemory(PropertyBuffer, ValueInformation->Data,