view: cancel pending auto-raise on view destroy

The pending_auto_raise_view pointer would become dangling if the
view it references is destroyed before the timer fires. Clear it
in view_destroy() alongside the existing active_view cleanup.

src/view.c

@@ -2521,6 +2521,10 @@ view_destroy(struct view *view)
 		server.active_view = NULL;
 	}
 
+	if (server.pending_auto_raise_view == view) {
+		desktop_cancel_pending_auto_raise();
+	}
+
 	if (server.session_lock_manager->last_active_view == view) {
 		server.session_lock_manager->last_active_view = NULL;
 	}