jappixmini: try to fix priority

jappixmini/lib.js

@@ -235,9 +235,9 @@ function jappixmini_addon_start(server, username, proxy, bosh, encrypted, passwo
         LOCK_HOST = "off";
         launchMini(true, false, server, username, password);
 
-        // increase priority over other Jabber clients
+        // increase priority over other Jabber clients - does not seem to work?
         priority = 101;
-        sendPresence(null,null,priority);
+        presenceMini(null,null,priority);
 
         jappixmini_manage_roster(contacts, autoapprove, autosubscribe)
     }