Add override

diff --git a/atom/browser/ui/message_box_gtk.cc b/atom/browser/ui/message_box_gtk.cc
index b7406e1416278a4a06f0240e074fd116881647d5..f0ebc705b5538c419a207f908f3a931b5c596019 100644 (file)
--- a/atom/browser/ui/message_box_gtk.cc
+++ b/atom/browser/ui/message_box_gtk.cc
@@ -148,7 +148,7 @@ class GtkMessageBox : public NativeWindowObserver {
     Show();
   }
 
-  void OnWindowClosed() {
+  void OnWindowClosed() override {
     parent_->RemoveObserver(this);
     parent_ = nullptr;
   }