* Use WORD declaration so 5a can't rewrite the instruction or complain
  about forms it doesn't know about.
* Add the interpunct to function declaration.

Change-Id: I8494548db21b3ea52f0e1e0e547d9ead8b93dfd1
Reviewed-on: https://go-review.googlesource.com/2682Reviewed-by: Minux Ma <minux@golang.org>