Fixed error introduced in commit f2be92b9

that fixed PR#3450 where an existing cast masked an issue when i was changed
from int to long in that commit

Picked up on z/linux (s390) where sizeof(int)!=sizeof(long)
Reviewed-by: NRich Salz <rsalz@openssl.org>
Reviewed-by: NMatt Caswell <matt@openssl.org>

ssl/s3_clnt.c

@@ -2002,6 +2002,7 @@ fprintf(stderr, "USING TLSv1.2 HASH %s\n", EVP_MD_name(md));
 		if (pkey->type == EVP_PKEY_RSA && !SSL_USE_SIGALGS(s))
 			{
 			int num;
+			unsigned int size;
 
 			j=0;
 			q=md_buf;
@@ -2014,9 +2015,9 @@ fprintf(stderr, "USING TLSv1.2 HASH %s\n", EVP_MD_name(md));
 				EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
 				EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
 				EVP_DigestUpdate(&md_ctx,param,param_len);
-				EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i);
-				q+=i;
-				j+=i;
+				EVP_DigestFinal_ex(&md_ctx,q,&size);
+				q+=size;
+				j+=size;
 				}
 			i=RSA_verify(NID_md5_sha1, md_buf, j, p, n,
 								pkey->pkey.rsa);