Fix issue with clearing bounds.

src/easeljs/display/DisplayObject.js

@@ -1190,7 +1190,7 @@ this.createjs = this.createjs||{};
 	 * @param {Number} height The height of the bounds.
 	 **/
 	p.setBounds = function(x, y, width, height) {
-		if (x == null) { this._bounds = x; }
+		if (x == null) { this._bounds = x; return; }
 		this._bounds = (this._bounds || new createjs.Rectangle()).setValues(x, y, width, height);
 	};