browser: check window liveness before setting title

diff --git a/atom/browser/native_window.cc b/atom/browser/native_window.cc
index 8027fdf..ba5dad7 100644 (file)
--- a/atom/browser/native_window.cc
+++ b/atom/browser/native_window.cc
@@ -512,7 +512,7 @@ void NativeWindow::TitleWasSet(content::NavigationEntry* entry,
   FOR_EACH_OBSERVER(NativeWindowObserver,
                     observers_,
                     OnPageTitleUpdated(&prevent_default, text));
-  if (!prevent_default)
+  if (!prevent_default && !is_closed_)
     SetTitle(text);
 }