unexport error

api/client/beacon/client.go

@@ -50,7 +50,7 @@ const (
 	IdHead    StateOrBlockId = "head"
 )
 
-var ErrMalformedHostname = errors.New("hostname must include port, separated by one colon, like example.com:3500")
+var errMalformedHostname = errors.New("hostname must include port, separated by one colon, like example.com:3500")
 
 // IdFromRoot encodes a block root in the format expected by the API in places where a root can be used to identify
 // a BeaconState or SignedBeaconBlock.
@@ -126,7 +126,7 @@ func urlForHost(h string) (*url.URL, error) {
 	// try to parse as host:port
 	host, port, err := net.SplitHostPort(h)
 	if err != nil {
-		return nil, ErrMalformedHostname
+		return nil, errMalformedHostname
 	}
 	return &url.URL{Host: fmt.Sprintf("%s:%s", host, port), Scheme: "http"}, nil
 }

api/client/beacon/client_test.go

@@ -91,7 +91,7 @@ func TestValidHostname(t *testing.T) {
 		{
 			name:    "hostname without port",
 			hostArg: "mydomain.org",
-			err:     ErrMalformedHostname,
+			err:     errMalformedHostname,
 		},
 		{
 			name:    "hostname with port",