unarist 2f3ac14a43 Add missing null handling in notification reducer (#6930)
This patch adds null item (i.e. gap) handling on below functions to avoid TypeError.

* `filterNotifications` called on user mute/block
* `deleteByStatus` called on status deletion
2018-03-27 13:05:59 +02:00
..
2018-03-27 12:32:30 +02:00
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2018-03-27 12:32:30 +02:00
2018-03-27 12:32:30 +02:00
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