fix issue with loading public and private keys concurrently, fix issue in pusherror when no OpenSSL errors are actually defined, and because OpenSSL doesn't define its FOO_free routines to accept NULL--even though most or all do handle NULL properly--don't pass them NULL
fix issue with loading public and private keys concurrently, fix issue in pusherror when no OpenSSL errors are actually defined, and because OpenSSL doesn't define its FOO_free routines to accept NULL--even though most or all do handle NULL properly--don't pass them NULL

kunkku/luaossl,kunkku/luaossl