`lock()` steps refer to the wrong promise when rejecting with `AbortError`

The `lock()` steps currently state that
> Reject the p with an "[AbortError](https://heycam.github.io/webidl/#aborterror)" DOMException.

But in this case `p` refers to the promise of the current call, not the previous pending lock.
Shouldn't it be something like this?:

> Reject the promise of the pending lock with an "[AbortError](https://heycam.github.io/webidl/#aborterror)" DOMException.