Left-pad a V2ClientHello's random, not right-pad.

The comment has it right, but the rewritten code was wrong.

Change-Id: I450193c39fb62eae32aae090a3834dd83db53421
Reviewed-on: https://boringssl-review.googlesource.com/2444
Reviewed-by: Adam Langley <agl@google.com>
2 files changed