Return IQ error internal_server_error when an exception occurs while...

Return IQ error internal_server_error when an exception occurs while processing an IQ packet. JM-1125

git-svn-id: http://svn.igniterealtime.org/svn/repos/openfire/trunk@9172 b35dd754-fafc-0310-a699-88a17e54d16e

src/java/org/jivesoftware/openfire/IQRouter.java

@@ -319,7 +319,9 @@ public class IQRouter extends BasicModule {
             Log.error(LocaleUtils.getLocalizedString("admin.error.routing"), e);
             Session session = sessionManager.getSession(packet.getFrom());
             if (session != null) {
-                session.close();
+                IQ reply = IQ.createResultIQ(packet);
+                reply.setError(PacketError.Condition.internal_server_error);
+                session.process(reply);
             }
         }
     }