internal/syscall/windows: set write access when O_TRUNC is used
Whenn O_TRUNC is set, Opentat ends up calling syscall.Ftruncate, which
needs write access. Make sure write access is not removed when O_TRUNC
and O_APPEND are both set.
Updates #67002.
Change-Id: Iccc470b7be3c62144318d6a707057504f3b74c97
Reviewed-on: https://go-review.googlesource.com/c/go/+/620576 Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Damien Neil <dneil@google.com> Reviewed-by: Damien Neil <dneil@google.com> Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>