* sexp2dsa.c (dsa_keypair_from_sexp_alist): Use a const pointer

array for the keywords.
(dsa_signature_from_sexp): Likewise.
* sexp2rsa.c (rsa_keypair_from_sexp_alist): Likewise.
(rsa_keypair_from_sexp): Likewise.

Rev: src/nettle/sexp2dsa.c:1.5
Rev: src/nettle/sexp2rsa.c:1.12