math/f25519.c: Add missing space in commant.

diff --git a/math/f25519.c b/math/f25519.c
index 7f8e66f..b33005b 100644 (file)
--- a/math/f25519.c
+++ b/math/f25519.c
@@ -756,7 +756,7 @@ static void carry_reduce(dblpiece x[NPIECE])
    * signed.
    */
 
-  /*For each piece, we bias it so that floor division (as done by an
+  /* For each piece, we bias it so that floor division (as done by an
    * arithmetic right shift) and modulus (as done by bitwise-AND) does the
    * right thing.
    */