tree d0ea3628fae26ef2b18f6abf4f42fb1d0dfa0cb2
parent 274341dd6e61b11c2b3f1dd208a28c83a2315914
author Brian Smith <brian@briansmith.org> 1444341176 -1000
committer Adam Langley <alangley@gmail.com> 1445965225 +0000

Clean up |ECDH_compute_key|.

1. Check for the presence of the private key before allocating or
   computing anything.
2. Check the return value of |BN_CTX_get|.
3. Don't bother computing the Y coordinate since it is not used.
4. Remove conditional logic in cleanup section.

Change-Id: I4d8611603363c7e5d16a8e9f1d6c3a56809f27ae
Reviewed-on: https://boringssl-review.googlesource.com/6171
Reviewed-by: Adam Langley <alangley@gmail.com>