Jasper St. Pierre fd99d13f04 messageTray: Correctly show the icon on a notification stack
An actor is removed from its parent after it emits the destroy signal,
so we can't just check if the notification stack has more than one
notification -- we need to check if there's a notification there
that is not the current one.

This was causing spew in the form of:

    "this.notificationStack.get_children()[0]._delegate.setIconVisible
     is not a function"
2012-02-17 13:52:48 -05:00
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