Code review comment for lp:~niemeyer/goamz/put-all

LGTM

https://codereview.appspot.com/7313081/diff/1/s3/multi.go
File s3/multi.go (right):

https://codereview.appspot.com/7313081/diff/1/s3/multi.go#newcode282
s3/multi.go:282: if totalSize == 0 || err != nil {
That's fine. I wasn't thinking about it being a slice, it does seem
correct there.

The concern was stuff like: http://play.golang.org/p/ZcjGU2BgbC

But that doesn't apply here because err has type "error" rather than a
custom type that could be a nil pointer.

https://codereview.appspot.com/7313081/