Follow-up on

    commit 3809655e
    Date:   Thu Dec 7 00:06:36 2017 +0100

        sc: don't crash on loading comments

        Seems filters call ShowNote before a view is set or something.
        Fixup for 25555c50.

This "best current view" looks a bit fragile anyway..

Change-Id: I7012e4d0e10128b21ece304507b204976a9e03db