git stash pop --quiet is not always quiet after save -u

Using git 2.7.0 or master (563e3849) apply/pop prints
"Already up-to-date!" if the stash contains only untracked files.  As
an example:

git init
git commit --allow-empty -m init
touch test.txt
git stash -u

Now that the stash contains only untracked files, applying it with
either pop or apply produces the following output:

$ git stash pop --quiet
Already up-to-date!

It's obviously a minor issue, but can be an annoyance for scripting
tasks.

Thanks for considering,
Kevin

P.S.  Please CC me on replies.  Thanks!