When `maybeReadMore` kicks in on a first bytes of incoming data, the
`req.read(0)` will be invoked and the `req._consuming` will be set to
`true`. This seemingly harmless property leads to a dire consequences:
the server won't call `req._dump()` and the whole HTTP/1.1 pipeline will
hang (single connection).
PR-URL: https://github.com/nodejs/node/pull/7211
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
