math/f25519.h: Fix argument name in commentary.

diff --git a/math/f25519.h b/math/f25519.h
index 4a2a219..7ecb6c9 100644 (file)
--- a/math/f25519.h
+++ b/math/f25519.h
@@ -92,7 +92,7 @@ extern void f25519_set(f25519 */*x*/, int /*a*/);
  *             toleration of them is considered a performance feature.
  *
  *             Some specifications, e.g., RFC7748, require the topmost bit
- *             (i.e., bit 7 of @wv[31]@) to be ignored.  Callers
+ *             (i.e., bit 7 of @xv[31]@) to be ignored.  Callers
  *             implementing such specifications should clear the bit
  *             explicitly.  (It's much easier for a caller who wants the bit
  *             to be ignored to clear it than for a caller who wants the bit