window: simplify a bit widget_set_size and widget_set_allocation

Signed-off-by: Tiago Vignatti <vignatti@freedesktop.org>
Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>
diff --git a/clients/window.c b/clients/window.c
index 5264d87..ae5a791 100644
--- a/clients/window.c
+++ b/clients/window.c
@@ -1076,8 +1076,6 @@
 void
 widget_set_size(struct widget *widget, int32_t width, int32_t height)
 {
-	struct window *window = widget->window;
-
 	widget->allocation.width = width;
 	widget->allocation.height = height;
 }
@@ -1088,8 +1086,7 @@
 {
 	widget->allocation.x = x;
 	widget->allocation.y = y;
-	widget->allocation.width = width;
-	widget->allocation.height = height;
+	widget_set_size(widget, width, height);
 }
 
 void *