vfs_streams_xattr: use fsp, not base_fsp
The base_fsp's fd is always -1 as it's closed after being openend in
create_file_unixpath().
Additionally in streams_xattr_open force using of SMB_VFS_FSETXATTR() by
sticking the just created fd into the fsp (and removing it afterwards).
Bug: https://bugzilla.samba.org/show_bug.cgi?id=12591
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Wed Feb 22 08:25:46 CET 2017 on sn-devel-144