nfs: Keep index within mnt_errtbl[]

Ensure that index i remains within array mnt_errtbl[] and mnt3_errtbl[].

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
1 file changed