subrepo: always return scmutil.status() from gitsubrepo.status()
This was accidentally left out of c95db3208a33.
$ hg init $ echo This is file a1 > a $ hg add a $ hg commit -m "commit #0" $ ls a $ echo This is file b1 > b $ hg add b $ hg commit -m "commit #1" $ hg co 0 0 files updated, 0 files merged, 1 files removed, 0 files unresolvedB should disappear $ ls a