Fixed NPE when no room name was specified when registering with a room. JM-1028

git-svn-id: http://svn.igniterealtime.org/svn/repos/openfire/trunk@7983 b35dd754-fafc-0310-a699-88a17e54d16e

src/java/org/jivesoftware/openfire/muc/spi/IQMUCRegisterHandler.java

@@ -106,7 +106,11 @@ class IQMUCRegisterHandler {
     public IQ handleIQ(IQ packet) {
         IQ reply = null;
         // Get the target room
-        MUCRoom room = mucServer.getChatRoom(packet.getTo().getNode());
+        MUCRoom room = null;
+        String name = packet.getTo().getNode();
+        if (name != null) {
+            room = mucServer.getChatRoom(name);
+        }
         if (room == null) {
             // The room doesn't exist so answer a NOT_FOUND error
             reply = IQ.createResultIQ(packet);