Make lint happy

briar-gtk/briar_gtk/container.py

@@ -16,4 +16,6 @@ class Container(Gtk.Overlay):
         self.builder = Gtk.Builder()
 
     def _add_from_resource(self, ui_filename):
-        self.builder.add_from_resource(os.path.join(RESOURCES_DIR, ui_filename))
+        self.builder.add_from_resource(
+            os.path.join(RESOURCES_DIR, ui_filename)
+        )

briar-gtk/briar_gtk/containers/registration.py

@@ -140,6 +140,8 @@ class RegistrationContainer(Container):
         error_label = self.builder.get_object("passwords_error_label")
         self._show_error_message(error_label, error_message)
 
-    def _show_error_message(self, error_label, error_message):
+
+    @staticmethod
+    def _show_error_message(error_label, error_message):
         error_label.set_label(error_message)
         error_label.show()