message: fix(PicturePreview): preserve natural size
diff: @@ -475,8 +475,6 @@ class PicturePreview extends Component<PicturePreviewProps, PicturePreviewState>
  handleZoom = ratio => {
  let image = {
  ratio: 0,
  - naturalWidth: 0,
  - naturalHeight: 0,
  marginL: 0,
  marginT: 0
  };
  