Fixed to consider priority zero when no value was provided.

git-svn-id: http://svn.igniterealtime.org/svn/repos/messenger/trunk@212 b35dd754-fafc-0310-a699-88a17e54d16e

src/java/org/jivesoftware/messenger/spi/PresenceImpl.java

@@ -93,6 +93,8 @@ public class PresenceImpl extends AbstractPacket implements Presence, Cacheable
             Element root = doc.getRootElement();
 
             show = Presence.SHOW_NONE;
+            // Default priority is zero unless a value is provided
+            priority = 0;
 
             Iterator subElements = root.elementIterator();
             while (subElements.hasNext()) {