Map UserEvent properly in Event::to_static (#1468)

CHANGELOG.md

@@ -5,6 +5,7 @@
 - On Wayland, fix color from `close_button_icon_color` not applying.
 - Ignore locale if unsupported by X11 backend
 - On Wayland, Add HiDPI cursor support
+- Fix `Event::to_static` returning `None` for user events.
 
 # 0.21.0 (2020-02-04)
 

src/event.rs

@@ -139,7 +139,7 @@ impl<'a, T> Event<'a, T> {
             WindowEvent { window_id, event } => event
                 .to_static()
                 .map(|event| WindowEvent { window_id, event }),
-            UserEvent(_) => None,
+            UserEvent(event) => Some(UserEvent(event)),
             DeviceEvent { device_id, event } => Some(DeviceEvent { device_id, event }),
             NewEvents(cause) => Some(NewEvents(cause)),
             MainEventsCleared => Some(MainEventsCleared),