Update SVGImage.cs

Author: jogibear9988

Source/SVGImage/SVG/SVGImage.cs

@@ -73,7 +73,7 @@ public enum eSizeType
                 new FrameworkPropertyMetadata(null, OnUriSourceChanged));
 
         public static DependencyProperty SizeTypeProperty = DependencyProperty.Register("SizeType",
-            typeof(eSizeType), typeof(SVGImage), new FrameworkPropertyMetadata(eSizeType.ContentToSizeStretch,
+            typeof(eSizeType), typeof(SVGImage), new FrameworkPropertyMetadata(eSizeType.ContentToSizeNoStretch,
                 FrameworkPropertyMetadataOptions.AffectsMeasure | FrameworkPropertyMetadataOptions.AffectsRender,
                 new PropertyChangedCallback(OnSizeTypeChanged)));