Bug 828978 - Remove pointless const_cast in SVGLength::GetUserUnitsPerPercent; r=longsonr

content/svg/content/src/SVGLength.cpp

@@ -191,7 +191,7 @@ SVGLength::GetUserUnitsPerUnit(const nsSVGElement *aElement, uint8_t aAxis) cons
 SVGLength::GetUserUnitsPerPercent(const nsSVGElement *aElement, uint8_t aAxis)
 {
   if (aElement) {
-    dom::SVGSVGElement *viewportElement = const_cast<nsSVGElement*>(aElement)->GetCtx();
+    dom::SVGSVGElement *viewportElement = aElement->GetCtx();
     if (viewportElement) {
       return NS_MAX(viewportElement->GetLength(aAxis) / 100.0f, 0.0f);
     }