qt: tray icon: don't show "network" if --offline

electrum/gui/qt/__init__.py

@@ -211,6 +211,7 @@ class ElectrumGui(BaseElectrumGui, Logger):
             m = self.tray.contextMenu()
             m.clear()
         network = self.daemon.network
+        if network:
             m.addAction(_("Network"), self.show_network_dialog)
         if network and network.lngossip:
             m.addAction(_("Lightning Network"), self.show_lightning_dialog)