Fix declaration without type in t_shs3.c

https://github.com/krb5/krb5/commit/02f15f278112f7c03fb24044de169c071a786d71
Author: Robbie Harwood <rharwood@redhat.com>
Committer: Greg Hudson <ghudson@mit.edu>
Commit: 02f15f278112f7c03fb24044de169c071a786d71
Branch: master
 src/lib/crypto/builtin/sha1/t_shs3.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)