smbd: Fix flawed share_mode_stale_pid API
The comment for this routine said:
> Modifies d->num_share_modes, watch out in routines iterating over
> that array.
Well, it turns out that *every* caller of this API got it wrong. So I
think it's better to change the routine.
This leaves the array untouched while iterating but filters out the
deleted ones while saving them back to disk.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
(cherry picked from commit
7d91ffc6fdc3b371564e14f09822a96264ea372a)