missing break

Reviewed-by: Tim Hudson <tjh@openssl.org>
diff --git a/apps/s_client.c b/apps/s_client.c
index f82f9db..559cf70 100644
--- a/apps/s_client.c
+++ b/apps/s_client.c
@@ -888,6 +888,7 @@
                 BIO_printf(bio_err, "Not a hex number '%s'\n", psk_key);
                 goto end;
             }
+            break;
 #else
         case OPT_PSK_IDENTITY:
         case OPT_PSK: