[workers-tests] worker postMessage(1, null) should throw, undefined should not. Fixes #491 (#1357)

(Omitting the second argument is already tested in e.g. `return-value.html`.)

View on GitHub: https://github.com/w3c/web-platform-tests/pull/1357

Received on Tuesday, 4 November 2014 20:37:14 UTC