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/wbrowser.c

@@ -434,6 +434,9 @@ static void willResizeBrowser(W_ViewDelegate * self, WMView * view, unsigned int
 	int colX, colY;
 	int i;
 
+	/* Parameter not used, but tell the compiler that it is ok */
+	(void) self;
+
 	assert(*width > 0);
 	assert(*height > 0);