Optimization: don't scale when parameter is 1.0

src/canvas.js

@@ -728,6 +728,7 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
         if (textSelection)
           text.geom = this.getTextGeometry();
 
+        if (fontSizeScale != 1.0)
           ctx.scale(fontSizeScale, fontSizeScale);
 
         var x = 0;