Added safety-check to ensure that room names are always in lowercase. JM-290

git-svn-id: http://svn.igniterealtime.org/svn/repos/messenger/trunk@1333 b35dd754-fafc-0310-a699-88a17e54d16e

src/java/org/jivesoftware/messenger/muc/spi/MUCUserImpl.java

@@ -372,7 +372,7 @@ public class MUCUserImpl implements MUCUser {
                                     historyRequest,
                                     this,
                                     packet.createCopy());
-                            roles.put(group, role);
+                            roles.put(group.toLowerCase(), role);
                             // If the client that created the room is non-MUC compliant then
                             // unlock the room thus creating an "instant" room
                             if (mucInfo == null && room.isLocked() && !room.isManuallyLocked()) {