message: Fix AES-GCM error handling
diff: @@ -129,7 +129,7 @@ func (i *AESGCMInsecureIV) Decrypt(iv, ciphertext, associatedData []byte) ([]byt
  }
  plaintext, err := cipher.Open(nil, iv, actualCiphertext, associatedData)
  if err != nil {
  - return nil, fmt.Errorf("%s", err)
  + return nil, err
  }
  return plaintext, nil
  }
  