Clean up ssl_cipher_list_to_bytes a little.

Still need to convert serializing code to CBB, but the current one is kinda
crazy.

Change-Id: I00e12a812c815bf01c53a26ccbb7c6727ea8c8fc
Reviewed-on: https://boringssl-review.googlesource.com/1840
Reviewed-by: Adam Langley <agl@google.com>
2 files changed