olly d99cb28e6a Correctly handle a SampleStream ending without providing a format
I'm going to introduce an EmptySampleStream that will be used in
some cases in conjunction as part of 608/EMSG support. This change
avoids EmptySampleStream having to provide a dummy format.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=148383831
2017-02-28 13:47:18 +00:00
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2017-01-13 17:27:25 +00:00