Add do-nothing function |ERR_load_SSL_strings|.

This benefits pyOpenSSL.

Change-Id: Ie7a35d6f9e9a1f0c7fe42ba105c68c327f7d0b0e
Reviewed-on: https://boringssl-review.googlesource.com/5740
Reviewed-by: Adam Langley <agl@google.com>
2 files changed