Minor fixes for ForestDB changes

Change-Id: I8646a3440cf6e02a9dea1c2835dbb698ebd64348
Reviewed-on: http://review.couchbase.org/38488
Reviewed-by: John Liang <johliang00@gmail.com>
Reviewed-by: Deepkaran Salooja <deepkaran.couchbase@gmail.com>
Tested-by: Deepkaran Salooja <deepkaran.couchbase@gmail.com>