WINGs: Marked args as unused for compiler in widget resize callback code

WINGs dispatches window resize events using callback functions, which
means having a fixed argument list for that function.

It is then correct to not use all the arguments, so this patch adds the
appropriate stuff to avoid a false report from compiler.

Signed-off-by: Christophe CURIS <christophe.curis@free.fr>

WINGs/wtabview.c

@@ -740,6 +740,9 @@ static void rearrange(TabView * tPtr)
 
 static void didResize(struct W_ViewDelegate *deleg, WMView * view)
 {
+	/* Parameter not used, but tell the compiler that it is ok */
+	(void) deleg;
+
 	rearrange(view->self);
 }