Replace logging output from Packet#toString() to Packet#toXML()

git-svn-id: http://svn.igniterealtime.org/svn/repos/openfire/trunk@10305 b35dd754-fafc-0310-a699-88a17e54d16e

src/java/org/jivesoftware/openfire/session/LocalOutgoingServerSession.java

@@ -558,7 +558,7 @@ public class LocalOutgoingServerSession extends LocalSession implements Outgoing
         try {
             if (packet instanceof IQ) {
             	if (((IQ) packet).isResponse()) {
-            		Log.debug("XMPP specs forbid us to respond with an IQ error to: " + packet);
+            		Log.debug("XMPP specs forbid us to respond with an IQ error to: " + packet.toXML());
             		return;
             	}
                 IQ reply = new IQ();