Fix non-C++ syntax in the go codegen
Fix non-C++ syntax in the go codegen

Summary: [Thrift] Fix non-C++ syntaxu in the go codegen. (It's not C++ syntax yet, anyway.)

Reviewed By: fiorix, mkaczanowski

Differential Revision: D15712418

fbshipit-source-id: fc60c22c8e330a56b50046e6d5419435ebd0c247

facebook/fbthrift,facebook/fbthrift,facebook/fbthrift,facebook/fbthrift,facebook/fbthrift,facebook/fbthrift,facebook/fbthrift,facebook/fbthrift,facebook/fbthrift