Ignore messages with no body and no subject.

git-svn-id: http://svn.igniterealtime.org/svn/repos/wildfire/trunk@6784 b35dd754-fafc-0310-a699-88a17e54d16e

src/java/org/jivesoftware/wildfire/muc/MUCRoomHistory.java

@@ -12,9 +12,9 @@
 package org.jivesoftware.wildfire.muc;
 
 import org.dom4j.Element;
-import org.jivesoftware.wildfire.user.UserNotFoundException;
 import org.jivesoftware.util.FastDateFormat;
 import org.jivesoftware.util.JiveConstants;
+import org.jivesoftware.wildfire.user.UserNotFoundException;
 import org.xmpp.packet.JID;
 import org.xmpp.packet.Message;
 
@@ -61,6 +61,12 @@ public final class MUCRoomHistory {
             }
         }
 
+        // Ignore messages with no subject AND no body
+        if ((packet.getSubject() == null || "".equals(packet.getSubject().trim())) &&
+                (packet.getBody() == null || "".equals(packet.getBody().trim()))) {
+            return;
+        }
+
         Message packetToAdd = packet.createCopy();
 
         // Check if the room has changed its configuration