joyent/node — pull request #7921 by oppenlander (2014-07-09 15:06:43+00:00)
Title: Set default highWaterMark properly for stream Duplux

With the addition of writableObjectMode and readableObejctMode options in stream.Duplex, the default highWaterMark wasn't being set using ReadableState/WritableState's objectMode property.