BUG/MINOR: ssl: Stop leaking `err` in ssl_sock_load_ocsp()

Previously performing a config check of `.github/h2spec.config` would report a
20 byte leak as reported in GitHub Issue #2082.

The leak was introduced in a6c0a59e9af65180c3ff591b91855bea8d19b352, which is
dev only. No backport needed.
1 file changed