During investigation into #74691, we found a case where the hash was
missing from the goSum global var. This change updates DownloadZip to
update the goSum hash if necessary when both the zipfile and
ziphashfile are already present.
For #74691
Change-Id: I904b7265f667256d0c60b66503a7954b467c6454
Reviewed-on: https://go-review.googlesource.com/c/go/+/705215
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Michael Matloob <matloob@golang.org> Reviewed-by: Michael Matloob <matloob@google.com>