revert my previous fix, and just don't take into account the click on go...

revert my previous fix, and just don't take into account the click on go button if jid hasn't changed

src/disco.py

@@ -620,6 +620,8 @@ _('This type of service does not contain any items to browse.')).get_response()
 
 	def on_go_button_clicked(self, widget):
 		jid = self.address_comboboxentry.child.get_text().decode('utf-8')
+		if jid == self.jid: # jid has not changed
+			return
 		if jid in self.latest_addresses:
 			self.latest_addresses.remove(jid)
 		self.latest_addresses.insert(0, jid)
@@ -741,8 +743,8 @@ class AgentBrowser:
 		self.cache = window.cache
 
 		self._set_initial_title()
-		if not self._create_treemodel():
-			self._add_actions()
+		self._create_treemodel()
+		self._add_actions()
 
 		# This is a hack. The buttonbox apparently doesn't care about pack_start
 		# or pack_end, so we repack the close button here to make sure it's last
@@ -1036,8 +1038,6 @@ class ToplevelAgentBrowser(AgentBrowser):
 		# JID, node, icon, description, state
 		# State means 2 when error, 1 when fetching, 0 when succes.
 		view = self.window.services_treeview
-		if len(view.get_columns()):
-			return True # Returns an error not to draw buttons
 		model = gtk.TreeStore(str, str, gtk.gdk.Pixbuf, str, int)
 		model.set_sort_func(4, self._treemodel_sort_func)
 		model.set_sort_column_id(4, gtk.SORT_ASCENDING)