Do not log messages with no body and no subject. JM-862

git-svn-id: http://svn.igniterealtime.org/svn/repos/wildfire/trunk@5616 b35dd754-fafc-0310-a699-88a17e54d16e

src/java/org/jivesoftware/wildfire/muc/spi/MultiUserChatServerImpl.java

@@ -909,8 +909,11 @@ public class MultiUserChatServerImpl extends BasicModule implements MultiUserCha
     }
 
     public void logConversation(MUCRoom room, Message message, JID sender) {
+        // Only log messages that have a subject or body. Otherwise ignore it.
+        if (message.getSubject() != null || message.getBody() != null) {
             logQueue.add(new ConversationLogEntry(new Date(), room, message, sender));
         }
+    }
 
     public void messageBroadcastedTo(int numOccupants) {
         // Increment counter of received messages that where broadcasted by one