IQMUCRegisterHandler.handleIQ doesn’'t check for null nickname. Room registration without nickname resulted as follows:
java.lang.NullPointerException
at org.jivesoftware.wildfire.muc.spi.IQMUCRegisterHandler.handleIQ(IQMUCRegisterHa ndler.java:169)
at org.jivesoftware.wildfire.muc.spi.MultiUserChatServerImpl.process(MultiUserChat ServerImpl.java:264)
at org.jivesoftware.wildfire.muc.spi.MultiUserChatServerImpl.processPacket(MultiUs erChatServerImpl.java:229)
at org.jivesoftware.wildfire.muc.spi.MultiUserChatServerImpl.process(MultiUserChat ServerImpl.java:216)
at org.jivesoftware.wildfire.IQRouter.handle(IQRouter.java:218)
at org.jivesoftware.wildfire.IQRouter.route(IQRouter.java:96)
at org.jivesoftware.wildfire.spi.PacketRouterImpl.route(PacketRouterImpl.java:67)
at org.jivesoftware.wildfire.net.SocketReader.processIQ(SocketReader.java:247)
at org.jivesoftware.wildfire.net.ClientSocketReader.processIQ(ClientSocketReader.j ava:51)
at org.jivesoftware.wildfire.net.SocketReader.process(SocketReader.java:213)
at org.jivesoftware.wildfire.net.BlockingReadingMode.readStream(BlockingReadingMod e.java:156)
at org.jivesoftware.wildfire.net.BlockingReadingMode.run(BlockingReadingMode.java: 62)
at org.jivesoftware.wildfire.net.SocketReader.run(SocketReader.java:123)
at java.lang.Thread.run(Unknown Source)