Use isSVG*Element() helpers more in SVG code (Part 4)

Source/core/svg/animation/SVGSMILElement.cpp

Index: Source/core/svg/animation/SVGSMILElement.cpp
diff --git a/Source/core/svg/animation/SVGSMILElement.cpp b/Source/core/svg/animation/SVGSMILElement.cpp
index 6e5e819ecbbb9570157a8e8f93b9842361a34a3d..1142df3d684c3433ba5e37b6294c1681ec998fab 100644
--- a/Source/core/svg/animation/SVGSMILElement.cpp
+++ b/Source/core/svg/animation/SVGSMILElement.cpp
@@ -1099,7 +1099,7 @@ SMILTime SVGSMILElement::calculateNextProgressTime(SMILTime elapsed) const
     if (m_activeState == Active) {
         // If duration is indefinite the value does not actually change over time. Same is true for <set>.
         SMILTime simpleDuration = this->simpleDuration();
-        if (simpleDuration.isIndefinite() || hasTagName(SVGNames::setTag)) {
+        if (simpleDuration.isIndefinite() || isSVGSetElement(*this)) {
             SMILTime repeatingDurationEnd = m_intervalBegin + repeatingDuration();
             // We are supposed to do freeze semantics when repeating ends, even if the element is still active.
             // Take care that we get a timer callback at that point.