Error are not triggered

Please see 'end-of-stream' module's second param options,
```javascript
eos(stream, {readable: reading, writable: writing}, function (err) {
if (err) return callback(err)
closed = true
callback()
})
```
can you change the codes to
```javascript
eos(stream, {readable: reading, writable: writing, error: true}, function (err) {
if (err) return callback(err)
closed = true
callback()
})
```

Start at the pump code containing the `eos(stream, ...)` call and compare its options with the end-of-stream module's behavior. Done means errors from the stream trigger the callback through the requested error-handling option.

Written by the indexing model from the issue text.