Fix compilation with ICU in current CVS

[Vincent Béron <vberon@xxxxxxxxxxxxxxxxxxxx>]

Changelog:
Fix compilation with ICU after introduction of gdi_private.h.

Vincent

Index: dlls/gdi/bidi.c
===================================================================
RCS file: /home/wine/wine/dlls/gdi/bidi.c,v
retrieving revision 1.3
diff -u -r1.3 bidi.c
--- dlls/gdi/bidi.c	30 Sep 2003 00:33:48 -0000	1.3
+++ dlls/gdi/bidi.c	15 Jan 2004 15:57:35 -0000
@@ -31,6 +31,7 @@
 #include "wingdi.h"
 #include "wine/debug.h"
 #include "gdi.h"
+#include "gdi_private.h"
 
 WINE_DEFAULT_DEBUG_CHANNEL(bidi);