cipher:kyber: Apply a change from upstream.
* cipher/kyber-common.c (poly_frommsg): Remove secret-dependent branch.
Manually apply upstream commit of:
0264efacf18dd665d2066f21df3a3290b52ba240
Fixed secret-dependent branch in poly_frommsg introduced by recent versions of clang with some flags (Thanks to Antoon Purnal for pointing this out!)
- Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>