Fix build when notify is disabled

src/app_state.rs

@@ -89,6 +89,7 @@ where
             gui,
             audio,
             prefs,
+            #[cfg(feature = "notify")]
             notif,
             hotkeys: RefCell::new(hotkeys),
         };

src/ui/prefs_dialog.rs

@@ -393,6 +393,7 @@ impl PrefsDialog {
             device_prefs,
             view_prefs,
             behavior_prefs,
+            #[cfg(feature = "notify")]
             notify_prefs,
             hotkey_prefs,
         };