[SVG] Handle animation freeze when 'repeatDur' is not a multiple of 'dur'

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 b5fdb07a90989cedd5fdaa9f87670f30f427d0c1..b84205a95ed9eb8f7a5adc1f246e7e84a17ed50e 100644
--- a/Source/core/svg/animation/SVGSMILElement.cpp
+++ b/Source/core/svg/animation/SVGSMILElement.cpp
@@ -1001,7 +1001,9 @@ float SVGSMILElement::calculateAnimationPercentAndRepeat(SMILTime elapsed, unsig
     SMILTime activeTime = elapsed - m_intervalBegin;
     SMILTime repeatingDuration = this->repeatingDuration();
     if (elapsed >= m_intervalEnd || activeTime > repeatingDuration) {
-        repeat = static_cast<unsigned>(repeatingDuration.value() / simpleDuration.value()) - 1;
+        repeat = static_cast<unsigned>(repeatingDuration.value() / simpleDuration.value());
+        if (!fmod(repeatingDuration.value(), simpleDuration.value()))
+            repeat--;
 
         double percent = (m_intervalEnd.value() - m_intervalBegin.value()) / simpleDuration.value();
         percent = percent - floor(percent);