message: elle.S3: clean up Keys
diff: @@ -14,14 +14,9 @@ namespace elle
  switch (request_type)
  {
  case RequestType::aws4:
  - stream << "aws4_request";
  - break;
  -
  - default:
  - stream << "unknown AWS request type";
  - elle::unreachable();
  + return stream << "aws4_request";
  }
  - return stream;
  + elle::unreachable();
  }
  std::ostream&
  @@ -30,20 +25,13 @@ namespace elle
  switch (service)
  {
  case Service::iam:
  - stream << "iam";
  - break;
  + return stream << "iam";
  case Service::s3:
  - stream << "s3";
  - break;
  + return stream << "s3";
  case Service::sts:
  - stream << "sts";
  - break;
  -
  - default:
  - stream << "unknown AWS service";
  - elle::unreachable();
  + return stream << "sts";
  }
  - return stream;
  + elle::unreachable();
  }
  std::ostream&
  @@ -52,14 +40,9 @@ namespace elle
  switch (signing_method)
  {
  case SigningMethod::aws4_hmac_sha256:
  - stream << "AWS4-HMAC-SHA256";
  - break;
  -
  - default:
  - stream << "unknown AWS signing method";
  - elle::unreachable();
  + return stream << "AWS4-HMAC-SHA256";
  }
  - return stream;
  + elle::unreachable();
  }
  }
  }
  