Remove _settings from global scope

src/prefs.js

@@ -8,14 +8,12 @@ const _ = Gettext.gettext;
 
 const ExtensionUtils = imports.misc.extensionUtils;
 
-let _settings;
-
 function init() {
 	ExtensionUtils.initTranslations();
 }
 
 function buildPrefsWidget() {
-    _settings = ExtensionUtils.getSettings();
+    let settings = ExtensionUtils.getSettings();
 	let box = new Gtk.Box({
 		halign: Gtk.Align.CENTER,
 		orientation: Gtk.Orientation.VERTICAL,
@@ -26,19 +24,19 @@ function buildPrefsWidget() {
 		spacing: 16
 	});
 
-	box.append(buildSwitcher('move-hot-corners', _('Move Hot Corners:')));
+	box.append(buildSwitcher(settings, 'move-hot-corners', _('Move Hot Corners:')));
 
 	return box;
 }
 
-function buildSwitcher(key, labeltext) {
+function buildSwitcher(settings, key, labeltext) {
 	let hbox = new Gtk.Box({orientation: Gtk.Orientation.HORIZONTAL, spacing: 10 });
 
 	let label = new Gtk.Label({label: labeltext });
 
 	let switcher = new Gtk.Switch();
 
-	_settings.bind(key, switcher, 'active', Gio.SettingsBindFlags.DEFAULT);
+	settings.bind(key, switcher, 'active', Gio.SettingsBindFlags.DEFAULT);
 
 	hbox.append(label);
 	hbox.append(switcher);