Avoid warnings when using gcc 3.4

reactos/lib/user32/windows

diff -u -r1.46 -r1.47
--- class.c	9 Apr 2004 20:03:14 -0000	1.46
+++ class.c	10 May 2004 12:21:22 -0000	1.47
@@ -1,4 +1,4 @@

-/* $Id: class.c,v 1.46 2004/04/09 20:03:14 navaraf Exp $

+/* $Id: class.c,v 1.47 2004/05/10 12:21:22 gvg Exp $

  *
  * COPYRIGHT:       See COPYING in the top level directory
  * PROJECT:         ReactOS user32.dll

@@ -107,7 +107,7 @@

     if (unicode)
         lpwcx->lpszMenuName = heap_string_poolW ( str2.Buffer, str2.Length );
     else

-        (LPWNDCLASSEXA) lpwcx->lpszMenuName = heap_string_poolA ( str2.Buffer, str2.Length );

+        ((LPWNDCLASSEXA) lpwcx)->lpszMenuName = heap_string_poolA ( str2.Buffer, str2.Length );

   }
 
   if ( !IS_ATOM(w.lpszClassName) && w.lpszClassName )

@@ -115,7 +115,7 @@

     if (unicode)
         lpwcx->lpszClassName = heap_string_poolW ( str3.Buffer, str3.Length );
     else

-        (LPWNDCLASSEXA) lpwcx->lpszClassName = heap_string_poolA ( str3.Buffer, str3.Length );

+        ((LPWNDCLASSEXA) lpwcx)->lpszClassName = heap_string_poolA ( str3.Buffer, str3.Length );

   }
 
   HEAP_free ( str2.Buffer );