Created attachment 286495 [details] [review]
installed: Add proper return value to ::delete-event handler

GtkWidget::delete-event has a boolean return value to indicate whether
signal emission should continue or be stopped - by avoiding an explicit
return value, the latter happens, making the app-folder dialog impossible
to close.

Review of attachment 286495 [details] [review]:

Looks good to me, thanks! Just a small spaces vs tabs issue in the patch that would be good to fix before committing.

Attachment 286495 [details] pushed as 8c1a910 - installed: Add proper return value to ::delete-event handler