minor bug fix

gui/src/2D/controls/image.ts

@@ -486,6 +486,7 @@ export class Image extends Control {
                     var vb = svgDoc.documentElement.getAttribute("viewBox");
                     var docwidth = Number(svgDoc.documentElement.getAttribute("width"));
                     var docheight = Number(svgDoc.documentElement.getAttribute("height"));
+                    var elem = <SVGGraphicsElement> <unknown> svgDoc.getElementById(elemid);
                     if (vb && docwidth && docheight) {
                         this._getSVGAttribs(svgExist, elemid);
                         return value;