olly 52d47aa244 Fix possible track selection NPE
If no tracks are selected at the start of playback, TrackSelectorResult
isEquivalent(null) returned true, meaning we were keeping the old result
(i.e. null), which we then tried to de-reference.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=145105702
2017-01-20 19:27:30 +00:00
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2017-01-20 19:27:30 +00:00
2017-01-13 17:27:25 +00:00