Consistent formatting for sizeof(foo)

Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/4872)
diff --git a/test/ssltest_old.c b/test/ssltest_old.c
index a4e596a..349d30a 100644
--- a/test/ssltest_old.c
+++ b/test/ssltest_old.c
@@ -1471,9 +1471,9 @@
     {
         int session_id_context = 0;
         if (!SSL_CTX_set_session_id_context(s_ctx, (void *)&session_id_context,
-                                            sizeof session_id_context) ||
+                                            sizeof(session_id_context)) ||
             !SSL_CTX_set_session_id_context(s_ctx2, (void *)&session_id_context,
-                                            sizeof session_id_context)) {
+                                            sizeof(session_id_context))) {
             ERR_print_errors(bio_err);
             goto end;
         }
@@ -1915,8 +1915,8 @@
             if (cw_num > 0) {
                 /* Write to server. */
 
-                if (cw_num > (long)sizeof cbuf)
-                    i = sizeof cbuf;
+                if (cw_num > (long)sizeof(cbuf))
+                    i = sizeof(cbuf);
                 else
                     i = (int)cw_num;
                 r = BIO_write(c_ssl_bio, cbuf, i);
@@ -1994,8 +1994,8 @@
             if (sw_num > 0) {
                 /* Write to client. */
 
-                if (sw_num > (long)sizeof sbuf)
-                    i = sizeof sbuf;
+                if (sw_num > (long)sizeof(sbuf))
+                    i = sizeof(sbuf);
                 else
                     i = (int)sw_num;
                 r = BIO_write(s_ssl_bio, sbuf, i);
@@ -2177,8 +2177,8 @@
             if (cw_num > 0) {
                 /* Write to server. */
 
-                if (cw_num > (long)sizeof cbuf)
-                    i = sizeof cbuf;
+                if (cw_num > (long)sizeof(cbuf))
+                    i = sizeof(cbuf);
                 else
                     i = (int)cw_num;
                 r = BIO_write(c_ssl_bio, cbuf, i);
@@ -2256,8 +2256,8 @@
             if (sw_num > 0) {
                 /* Write to client. */
 
-                if (sw_num > (long)sizeof sbuf)
-                    i = sizeof sbuf;
+                if (sw_num > (long)sizeof(sbuf))
+                    i = sizeof(sbuf);
                 else
                     i = (int)sw_num;
                 r = BIO_write(s_ssl_bio, sbuf, i);
@@ -2750,7 +2750,7 @@
     char *s, buf[256];
 
     s = X509_NAME_oneline(X509_get_subject_name(X509_STORE_CTX_get_current_cert(ctx)),
-                          buf, sizeof buf);
+                          buf, sizeof(buf));
     if (s != NULL) {
         if (ok)
             printf("depth=%d %s\n", X509_STORE_CTX_get_error_depth(ctx), buf);