app: replace driver.Close with Perform(ActionClose)

Signed-off-by: Elias Naur <mail@eliasnaur.com>

app/os_wayland.go

@@ -1034,6 +1034,8 @@ func (w *window) Perform(actions system.Action) {
 		switch action {
 		case system.ActionMove:
 			w.move()
+		case system.ActionClose:
+			w.dead = true
 		default:
 			w.resize(action)
 		}
@@ -1627,11 +1629,6 @@ func (w *window) SetInputHint(_ key.InputHint) {}
 
 func (w *window) EditorStateChanged(old, new editorState) {}
 
-// Close the window.
-func (w *window) Close() {
-	w.dead = true
-}
-
 func (w *window) NewContext() (context, error) {
 	var firstErr error
 	if f := newWaylandVulkanContext; f != nil {