tree cab8f59cfaf3ddc3f4274a51f5fa266ca197f7a4
parent d860b7b1cdefa22b2d42074aa5c8ce2a8ec1da5c
author Brian Smith <brian@briansmith.org> 1458951760 -1000
committer David Benjamin <davidben@google.com> 1461192826 +0000

Avoid a multiplication in |ecp_nistz256_get_affine| when |x| is NULL.

This is purely hypothetical, as in real life nobody cares about the
|y| component without also caring about the |x| component, but it
clarifies the code and makes a future change clearer.

Change-Id: Icaa4de83c87b82a8e68cd2942779a06e5db300c3
Reviewed-on: https://boringssl-review.googlesource.com/7588
Reviewed-by: David Benjamin <davidben@google.com>