Remove children of title element before setting new title

Source/core/dom/Document.cpp

Index: Source/core/dom/Document.cpp
diff --git a/Source/core/dom/Document.cpp b/Source/core/dom/Document.cpp
index 3db7d47193f78059d23ee8b87b56404b767b8399..dd5226ba0ec7e040a46f0f8e559f7575a0c7fd87 100644
--- a/Source/core/dom/Document.cpp
+++ b/Source/core/dom/Document.cpp
@@ -1299,10 +1299,10 @@ void Document::setTitle(const String& title)
         }
     }
 
-    updateTitle(title);
-
     if (m_titleElement && m_titleElement->hasTagName(titleTag))
         toHTMLTitleElement(m_titleElement)->setText(title);
+    else
+        updateTitle(title);
 }
 
 void Document::setTitleElement(const String& title, Element* titleElement)