tree dea25272bc680c9b421f65d0db2fedf873f3aab2
parent 32fbdf2025330664bd2a977d3ef62802e0cf817d
author Brian Smith <brian@briansmith.org> 1428535706 -1000
committer Adam Langley <agl@google.com> 1428539354 +0000

Avoid calling BN_CTX_end without BN_CTX_start in ec_wNAF_precompute_mult.

Prior to this change, when EC_GROUP_get0_generator fails, BN_CTX_end
would get called even though BN_CTX_start hadn't been called yet, in
the case where the caller-supplied |ctx| is not NULL.

Change-Id: I6f728e74f0167193891cdb6f122b20b0770283dc
Reviewed-on: https://boringssl-review.googlesource.com/4271
Reviewed-by: Adam Langley <agl@google.com>