Jonas Jenwald 08f9718a37 Add a bit more validation in the ViewHistory constructor
- Ensure that `database.files` actually contains an Array, rather than some arbitrary data.

 - Only try to lookup an existing entry when the `database` existed on load, since there's obviously nothing to find when `database.files = []` was set (this case is very common in the MOZCENTRAL build since `sessionStorage` is being used there).
2020-03-21 13:55:06 +01:00
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2018-05-14 23:10:32 -04:00