Change typings from Array.<number> to ArrayBuffer in third_party/pcsc-lite/naclport/js_client/src/api.js

[ViktoriiaKovalova]

No description provided.

[emaxx-google]

Did only these three places have incorrect signatures, or effectively the whole file used !Array.<number> incorrectly? I don't have an answer off the top of my head, but it might be an unintentional consequence of #222...

[ViktoriiaKovalova]

I didn't check what is actually returned for other functions but looking at #222, I guess in other places !Array.<number> is also used incorrectly.

[emaxx-google]

I've spent some time looking how we can write a test for this change, but seems like a nontrivial investment in the moment (as we'd need an integration-like C++-to-JS test, which we do have but only for a different component, and this only for NaCl which we cannot test automatically on bots).

But I've performed a manual test by adding test assertions, and the change seems to be correct. Hence LGTM, and thanks for catching and fixing this.