Use toSVGPathElement() instead of static_cast<>

Source/core/rendering/svg/SVGRenderTreeAsText.cpp

Index: Source/core/rendering/svg/SVGRenderTreeAsText.cpp
diff --git a/Source/core/rendering/svg/SVGRenderTreeAsText.cpp b/Source/core/rendering/svg/SVGRenderTreeAsText.cpp
index 980fa195a64778abddcfb96e58439c0fe0d551bd..8379f41b28c574a8326a52dfe9bf313d792a215a 100644
--- a/Source/core/rendering/svg/SVGRenderTreeAsText.cpp
+++ b/Source/core/rendering/svg/SVGRenderTreeAsText.cpp
@@ -357,7 +357,7 @@ static TextStream& operator<<(TextStream& ts, const RenderSVGShape& shape)
         SVGPolyElement* element = static_cast<SVGPolyElement*>(svgElement);
         writeNameAndQuotedValue(ts, "points", element->pointList().valueAsString());
     } else if (svgElement->hasTagName(SVGNames::pathTag)) {
-        SVGPathElement* element = static_cast<SVGPathElement*>(svgElement);
+        SVGPathElement* element = toSVGPathElement(svgElement);
         String pathString;
         // FIXME: We should switch to UnalteredParsing here - this will affect the path dumping output of dozens of tests.
         buildStringFromByteStream(element->pathByteStream(), pathString, NormalizedParsing);