[PATCH] nss_compat: internal_end*ent may clobber errno, hiding ERANGE [BZ #25976]

[Florian Weimer]

* Florian Weimer via Libc-alpha:

> Change the internal_end*ent functions to preserve errno because they
> are called on error-returning paths, where the value of errno matters.
>
> For the external-facing _nss_compat_end*ent functions, this is not
> required because they always report success, so they may clobber
> errno.

Internal discussion at Red Hat convinced me that the patch does not go
into the right direction, so I'm withdrawing it for now.

Thanks,
Florian