tinkerpop/rexster — pull request #330 by MrKeyholder (2013-11-24 22:10:51+00:00)
Title: fix NPE in RexsterClient when using MsgPackSerializer with null result (fixes issue #327)

Hello,

We've experienced same NPE outlined in #327 when using default serializer with RexsterClient.
This change makes null response similar to JsonSerializer's response.
Test is provided.