Issue #1221: Pass the original element into

nsXMLContentSerializer::CheckElementEnd so that we can properly
determine whether it has children.

This resolves #1221

dom/base/nsHTMLContentSerializer.cpp

@@ -301,6 +301,7 @@ nsHTMLContentSerializer::AppendElementStart(Element* aElement,
   
 NS_IMETHODIMP 
 nsHTMLContentSerializer::AppendElementEnd(Element* aElement,
+                                          Element* aOriginalElement /* unused */,
                                           nsAString& aStr)
 {
   NS_ENSURE_ARG(aElement);