Close streams immediately when we finish using them

OpenSim/Region/CoreModules/Avatar/Friends/FriendsRequestHandler.cs

@@ -1,4 +1,4 @@
-/*
+/*
  * Copyright (c) Contributors, http://opensimulator.org/
  * See CONTRIBUTORS.TXT for a full list of copyright holders.
  *
@@ -289,18 +289,7 @@ namespace OpenSim.Region.CoreModules.Avatar.Friends
 
             rootElement.AppendChild(result);
 
-            return DocToBytes(doc);
-        }
-
-        private byte[] DocToBytes(XmlDocument doc)
-        {
-            MemoryStream ms = new MemoryStream();
-            XmlTextWriter xw = new XmlTextWriter(ms, null);
-            xw.Formatting = Formatting.Indented;
-            doc.WriteTo(xw);
-            xw.Flush();
-
-            return ms.ToArray();
+            return Util.DocToBytes(doc);
         }
 
         #endregion