THRIFT-1319. java: Mismatch between how a union reads and writes a container

This patch fixes the problem in the java generator (and removes an unnecessary comment). It also amends TestTUnion to catch this.

Patch: Armaan Sarkar

git-svn-id: https://svn.apache.org/repos/asf/thrift/trunk@1164202 13f79535-47bb-0310-9956-ffa450edef68
2 files changed