Also fix some redundant type declarations. Change-Id: Iad2950b67b1ec2e2590c59393b8ad15421ed3add GitHub-Last-Rev: 41cf552f11387208491dee7b867050475043b25e GitHub-Pull-Request: golang/crypto#263 Reviewed-on: https://go-review.googlesource.com/c/crypto/+/505798 Reviewed-by: Dmitri Shuralyov <dmitshur@google.com> Reviewed-by: David Chase <drchase@google.com> TryBot-Result: Gopher Robot <gobot@golang.org> Auto-Submit: Dmitri Shuralyov <dmitshur@google.com> Reviewed-by: Filippo Valsorda <filippo@golang.org> Run-TryBot: Filippo Valsorda <filippo@golang.org>