[streams] Fix constness bug (#431)

Make `time` and `pauses` a `let` rather than `const`, as they are modified.

Discovered while compiling with babeljs.
You can view, comment on, or merge this pull request online at:

  https://github.com/whatwg/streams/pull/431

-- Commit Summary --

  * Fix constness bug

-- File Changes --

    M reference-implementation/bench/recording-differ.js (2)

-- Patch Links --

https://github.com/whatwg/streams/pull/431.patch
https://github.com/whatwg/streams/pull/431.diff

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Reply to this email directly or view it on GitHub:
https://github.com/whatwg/streams/pull/431