avoid unexpected unhandledRejection

[suguru03]

I fixed this issue. #1404
Could you review it?

I wanted to add these cases, but there is no async/await test case. Therefore I didn't. (If you want, I will add them..)

example 0

async function WaitAsync(){
    return Promise.reject(new Error("reject"));
}

Promise.resolve().then(() => {
    return WaitAsync();
}).catch(err => {
    console.log("caught: ", err.message);
});

caught:  reject

example 1

Promise.using(Promise.resolve(), async () => {
  await Promise.reject(new Error('foo'))
})
.catch(() => console.log('OK'))

OK

example 2

const reject = () => Promise.reject(new Error('foo'))

Promise.using(Promise.resolve(), async () => {
  await reject()
})
.catch(() => console.log('OK'))

OK

[STRML]

@petkaantonov Please take a look - this is causing spurious logging in production applications.

[petkaantonov]

Thanks, same fix was already implemented. However it causes more issues because setTimeout is hijacked by some testing frameworks.