allow edit multiple times within time-window

app/store/service/service.go

@@ -104,10 +104,6 @@ func (s *DataStore) EditComment(locator store.Locator, commentID string, req Edi
 	if err != nil {
 		return comment, err
 	}
-	// edit allowed only once
-	if comment.Edit != nil {
-		return comment, errors.Errorf("comment %s already edited at %s", commentID, comment.Edit.Timestamp)
-	}
 
 	// edit allowed in editDuration window only
 	if s.EditDuration > 0 && time.Now().After(comment.Timestamp.Add(s.EditDuration)) {

app/store/service/service_test.go

@@ -158,7 +158,7 @@ func TestService_EditComment(t *testing.T) {
 
 	_, err = b.EditComment(store.Locator{URL: "https://radio-t.com", SiteID: "radio-t"}, res[0].ID,
 		EditRequest{Orig: "yyy", Text: "xxx", Summary: "my edit"})
-	assert.NotNil(t, err, "allow edit once")
+	assert.Nil(t, err, "allow second edit")
 }
 
 func TestService_EditCommentDurationFailed(t *testing.T) {