Fix some comment typos.

dns/dns_test.go

@@ -47,7 +47,7 @@ func TestName(t *testing.T) {
 		// 64 octets.
 		{[][]byte{[]byte("0123456789abcdef0123456789ABCDEF0123456789abcdef0123456789ABCDEF")}, ErrLabelTooLong, ""},
 
-		// 64+64+64+61 octets.
+		// 64+64+64+62 octets.
 		{[][]byte{
 			[]byte("0123456789abcdef0123456789ABCDEF0123456789abcdef0123456789ABCDE"),
 			[]byte("0123456789abcdef0123456789ABCDEF0123456789abcdef0123456789ABCDE"),
@@ -55,7 +55,7 @@ func TestName(t *testing.T) {
 			[]byte("0123456789abcdef0123456789ABCDEF0123456789abcdef0123456789ABC"),
 		}, nil,
 			"0123456789abcdef0123456789ABCDEF0123456789abcdef0123456789ABCDE.0123456789abcdef0123456789ABCDEF0123456789abcdef0123456789ABCDE.0123456789abcdef0123456789ABCDEF0123456789abcdef0123456789ABCDE.0123456789abcdef0123456789ABCDEF0123456789abcdef0123456789ABC"},
-		// 64+64+64+62 octets.
+		// 64+64+64+63 octets.
 		{[][]byte{
 			[]byte("0123456789abcdef0123456789ABCDEF0123456789abcdef0123456789ABCDE"),
 			[]byte("0123456789abcdef0123456789ABCDEF0123456789abcdef0123456789ABCDE"),