Add FIXME comment.

diff --git a/curve25519-mul.c b/curve25519-mul.c
index f5127d7794010f14f97f55d3dc5f874d9c332e9f..ba76bc0bb1b2b27307ef9990087ef7794ebb71ab 100644 (file)
--- a/curve25519-mul.c
+++ b/curve25519-mul.c
@@ -122,6 +122,7 @@ curve25519_mul (uint8_t *q, const uint8_t *n, const uint8_t *p)
       ecc_modp_sqr (ecc, DA, C);
       ecc_modp_mul (ecc, z3, DA, x1);
 
+      /* FIXME: Could be combined with the loop's initial cnd_swap. */
       cnd_swap (bit, x2, x3, 2*ecc->p.size);
     }
   /* Do the 3 low zero bits, just duplicating x2 */