net/http: correctly show error types in transfer test
actualReader and tc.expectedReader are reflect.Type instances,
not the actual objects.
Change-Id: I7c9cfa489e3297b94c603b62bad1ed84bd207057
GitHub-Last-Rev:
d581402375aea0c911fef663ec7e89a24c4e5524
GitHub-Pull-Request: golang/go#52339
Reviewed-on: https://go-review.googlesource.com/c/go/+/400235
Reviewed-by: Damien Neil <dneil@google.com>
Run-TryBot: Damien Neil <dneil@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Auto-Submit: Ian Lance Taylor <iant@golang.org>