Portability fix for apps/s_client.c
Portability fix for apps/s_client.c

Make some local variables and a table of them be static.

Reviewed-by: Viktor Dukhovni <86faeb3e05561b856666236e198c27e698275e82@openssl.org>

openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl