Explicit cast NimbleTypes.h (#468)
Explicit cast NimbleTypes.h (#468)

Summary:
Pull Request resolved: https://github.com/facebook/fbthrift/pull/468

Enabling stricter compilation flags: check D30950362

Reviewed By: r-barnes

Differential Revision: D31105324

fbshipit-source-id: 10d6d563c0ad4e4bb4fe63a07a3c07cd4191bcc2

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