ui: avoid restart messages when changing node options

When saving the preferences, we check if the user changed the address of
the node. Usually the current node address is the same than the one
loaded, but some gRPC versions does not report it, so we use
"unix:/local" as the address of the node.

As this address is different than the one configured, we were displaying
unnecessary restart messages to the users.

Author: gustavo-iniguez-goya

ui/opensnitch/dialogs/preferences.py

@@ -929,7 +929,9 @@ def _save_node_config(self, notifObject, addr):
                 return error
 
             # exclude this message if there're more than one node connected
-            if self.comboNodes.currentText() != self.comboNodeAddress.currentText() or \
+            # XXX: unix:/local is a special name for the node, when the gRPC
+            # does not return the correct address of the node.
+            if (self.comboNodes.currentText() != "unix:/local" and self.comboNodes.currentText() != self.comboNodeAddress.currentText()) or \
                     self.comboServerAddr.currentText() != self.comboNodeAddress.currentText():
                 self._changes_needs_restart = QC.translate("preferences", "Node address changed (update GUI address if needed)")