Fixes https://bugs.dojotoolkit.org/ticket/18350 demos/bezier: GFX surface has wrong size

commit a792d8fd50fae767a7b47e80df086f8f3e3363ad
Author: eftibug <mike.eftimakis@laposte.net>
Date:   Wed Oct 29 00:44:16 2014 +0100

    Fixed box width/height

    Fixed box width/height (.w and .h instead of .width and .height) on line 260