Small optimization patch in nfs4_acls.c to avoid refetching stat if we have it

[Ralph Böhme]

Hi Richard,

On Thu, Aug 03, 2017 at 08:32:47AM -0700, Richard Sharpe via samba-technical wrote:
> This can reduce the number of stat calls we make ...

is this really correct?

Iirc and from briefly rechecking the code, the callers already do this
check. Also smbacl4_GetFileOwner() looks like it's supposed to return stat info
via the out arg psbuf, so if the statinfo of the smb_fname is valid, you should
probably set *psbuf to smb_fname->st...

-slow