crypto/internal/fips140: zeroise integrity test temporary values
There is no point to zeroise anything here because there are no secrets,
but there is a strict FIPS 140-3 test requirement for it.
> TE05.08.02 (Levels 1, 2, 3, and 4): verify that any temporary values
> generated during the integrity test are zeroised upon completion of
> the integrity test
Change-Id: I7b0db075dae9910f8e825a22ca2caa2b4c918980
Reviewed-on: https://go-review.googlesource.com/c/go/+/636556
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Daniel McCarney <daniel@binaryparadox.net> Reviewed-by: Michael Pratt <mpratt@google.com> Reviewed-by: Roland Shoemaker <roland@golang.org>
Auto-Submit: Filippo Valsorda <filippo@golang.org>