variable scoping issue, leading to clipped objects

Author: adabru

src/easeljs/display/StageGL.js

@@ -2627,7 +2627,7 @@ this.createjs = this.createjs||{};
 				}
 
 				if(!this._directDraw && (!ignoreCache && item.cacheCanvas === null && item.filters !== null && item.filters.length)) {
-					var bounds;
+					var bounds = null;
 					if (item.bitmapCache === null) {
 						bounds = item.getBounds();
 						item.bitmapCache = new createjs.BitmapCache();