loadPrivateKey invokes log.Fatalln with a nil error if pem.Decode fails

[odeke-em]

If we examine in this section https://github.com/lu4p/ToRat/blob/5f90a79d273f24dfaab267612603880372c16bb8/torat_server/crypto/crypto.go#L25-L28 we can see this

But that's because that code incorrectly assumed that err would be returned after pem.Decode.