This CL clean up patch in SVGElements.

Source/core/svg/graphics/filters/SVGFEImage.cpp

Index: Source/core/svg/graphics/filters/SVGFEImage.cpp
diff --git a/Source/core/svg/graphics/filters/SVGFEImage.cpp b/Source/core/svg/graphics/filters/SVGFEImage.cpp
index b43827a16ec3747bdfa5102d525b1d29b9809f5d..ab461a47ba5990eee80f648678a510ccd203730c 100644
--- a/Source/core/svg/graphics/filters/SVGFEImage.cpp
+++ b/Source/core/svg/graphics/filters/SVGFEImage.cpp
@@ -132,10 +132,10 @@ FloatRect FEImage::determineAbsolutePaintRect(const FloatRect& originalRequested
 LayoutObject* FEImage::referencedLayoutObject() const
 {
     if (!m_treeScope)
-        return 0;
+        return nullptr;
     Element* hrefElement = SVGURIReference::targetElementFromIRIString(m_href, *m_treeScope);
     if (!hrefElement || !hrefElement->isSVGElement())
-        return 0;
+        return nullptr;
     return hrefElement->layoutObject();
 }