problems using update-xfce script

[Bill Northlich]

got the following error just now.  did not happen with rc3.  gentoo 
linux.  thanks!
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...
Making all in src
gmake[2]: Entering directory `/usr/src/xfce-devel/xfwm4/src'
if gcc -DHAVE_CONFIG_H -I. -I. -I..    
-I/usr/include/startup-notification-1.0 -I/usr/X11R6/include 
-I/usr/X11R6/include -I/usr/local/include/xfce4 -I/usr/include/glib-2.0 
-I/usr/lib/glib-2.0/include -I/usr/X11R6/include 
-I/usr/local/include/xfce4 -I/usr/include/gtk-2.0 
-I/usr/lib/gtk-2.0/include -I/usr/include/pango-1.0 
-I/usr/include/freetype2 -I/usr/include/glib-2.0 
-I/usr/lib/glib-2.0/include -I/usr/include/atk-1.0 -I/usr/X11R6/include 
-I../common -DPACKAGE_LOCALE_DIR=\"/usr/local/share/locale\" 
-DDATADIR=\"/usr/local/share/xfwm4\" -g -O2 -MT xfwm4-events.o -MD -MP 
-MF ".deps/xfwm4-events.Tpo" \
  -c -o xfwm4-events.o `test -f 'events.c' || echo './'`events.c; \
then mv ".deps/xfwm4-events.Tpo" ".deps/xfwm4-events.Po"; \
else rm -f ".deps/xfwm4-events.Tpo"; exit 1; \
fi
events.c: In function `typeOfClick':
events.c:101: too many arguments to function `XFlush'
events.c:149: too many arguments to function `XFlush'
gmake[2]: *** [xfwm4-events.o] Error 1
gmake[2]: Leaving directory `/usr/src/xfce-devel/xfwm4/src'
gmake[1]: *** [all-recursive] Error 1
gmake[1]: Leaving directory `/usr/src/xfce-devel/xfwm4'
gmake: *** [all] Error 2
Error: Compilation of "xfwm4" failed.