Fix sign-compare warnings.

ssl/s2_pkt.c

@@ -130,7 +130,7 @@ static int ssl2_read_internal(SSL *s, void *buf, int len, int peek)
 	unsigned char mac[MAX_MAC_SIZE];
 	unsigned char *p;
 	int i;
-	int mac_size;
+	unsigned int mac_size;
 
  ssl2_read_again:
 	if (SSL_in_init(s) && !s->in_handshake)

ssl/t1_enc.c

@@ -805,7 +805,7 @@ int tls1_final_finish_mac(SSL *s,
 		{
 		if (mask & s->s3->tmp.new_cipher->algorithm2)
 			{
-			int hashsize = EVP_MD_size(md);
+			unsigned int hashsize = EVP_MD_size(md);
 			if (hashsize < 0 || hashsize > (sizeof buf - (size_t)(q-buf)))
 				{
 				/* internal error: 'buf' is too small for this cipersuite! */