Fixed error when answering "service_unavailable" to an IQ result packet.

git-svn-id: http://svn.igniterealtime.org/svn/repos/messenger/trunk@1470 b35dd754-fafc-0310-a699-88a17e54d16e

src/java/org/jivesoftware/messenger/IQRouter.java

@@ -243,7 +243,7 @@ public class IQRouter extends BasicModule {
                 }
                 // If a route to the target address was not found then try to answer a
                 // service_unavailable error code to the sender of the IQ packet
-                if (!handlerFound) {
+                if (!handlerFound && IQ.Type.result != packet.getType()) {
                     IQ reply = IQ.createResultIQ(packet);
                     reply.setChildElement(packet.getChildElement().createCopy());
                     reply.setError(PacketError.Condition.service_unavailable);