Reversed save modified dialog change: answering no now again closes buffer

src/notebook.cpp

@@ -943,7 +943,10 @@ bool Notebook::save_modified_dialog(size_t index) {
   dialog.set_default_response(Gtk::RESPONSE_YES);
   dialog.set_secondary_text("Do you want to save " + filesystem::get_short_path(get_view(index)->file_path).string() + "?");
   dialog.show_all();
-  if(dialog.run() == Gtk::RESPONSE_YES)
+  int result = dialog.run();
+  if(result == Gtk::RESPONSE_YES)
     return save(index);
+  else if(result == Gtk::RESPONSE_NO)
+    return true;
   return false;
 }