runtime,runtime/pprof: avoid tiny allocations in finalizer-related tests

A few tests rely on finalizers running, but are doing tiny allocations.
These tests will break if, for example, the testing package does is own
tiny allocations before calling the test function (see CL 478955). The
tiny allocator will group these allocations together and the ones done
for the tests themselves will live longer than desired. Use types which
have/are pointers for these tests so they won't be allocated by the tiny
allocator.

While here, pick up a small refactor suggested by Michael Knyszek to use
the BlockUntilEmptyFinalizerQueue helper to wait for the finalizers to
run in TestFinalizerRegisterABI.

Change-Id: I39f477d61f81dc76c87fae215339f8a38979cf94
Reviewed-on: https://go-review.googlesource.com/c/go/+/529555
Auto-Submit: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Carlos Amedee <carlos@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>

0 files changed, 0 insertions, 0 deletions