in XLinq XObject there is no need to instantiate XObjectEventArgs eve…

…ry time.

mcs/class/System.Xml.Linq/System.Xml.Linq/XObject.cs

@@ -165,42 +165,42 @@ internal void FillLineInfoAndBaseUri (XmlReader r, LoadOptions options)
 
 		internal void OnAddingObject (object addedObject)
 		{
-			OnChanging (addedObject, new XObjectChangeEventArgs (XObjectChange.Add));
+			OnChanging (addedObject, XObjectChangeEventArgs.Add);
 		}
 
 		internal void OnAddedObject (object addedObject)
 		{
-			OnChanged (addedObject, new XObjectChangeEventArgs (XObjectChange.Add));
+			OnChanged (addedObject, XObjectChangeEventArgs.Add);
 		}
 
 		internal void OnNameChanging (object renamedObject)
 		{
-			OnChanging (renamedObject, new XObjectChangeEventArgs (System.Xml.Linq.XObjectChange.Name));
+			OnChanging (renamedObject, XObjectChangeEventArgs.Name);
 		}
 
 		internal void OnNameChanged (object renamedObject)
 		{
-			OnChanged (renamedObject, new XObjectChangeEventArgs (System.Xml.Linq.XObjectChange.Name));
+			OnChanged (renamedObject, XObjectChangeEventArgs.Name);
 		}
 
 		internal void OnRemovingObject (object removedObject)
 		{
-			OnChanging (removedObject, new XObjectChangeEventArgs (XObjectChange.Remove));
+			OnChanging (removedObject, XObjectChangeEventArgs.Remove);
 		}
 
 		internal void OnRemovedObject (object removedObject)
 		{
-			OnChanged (removedObject, new XObjectChangeEventArgs (XObjectChange.Remove));
+			OnChanged (removedObject, XObjectChangeEventArgs.Remove);
 		}
 
 		internal void OnValueChanging (object changedObject)
 		{
-			OnChanging (changedObject, new XObjectChangeEventArgs (XObjectChange.Value));
+			OnChanging (changedObject, XObjectChangeEventArgs.Value);
 		}
 
 		internal void OnValueChanged (object changedObject)
 		{
-			OnChanged (changedObject, new XObjectChangeEventArgs (XObjectChange.Value));
+			OnChanged (changedObject, XObjectChangeEventArgs.Value);
 		}