message: fix(cli): item.subject may be null
diff: @@ -37,7 +37,7 @@ function transform(item: any) {
  if (item.references.length) {
  item.references.forEach((ref: any) => {
  - if (ref.issue) {
  + if (ref.issue && item.subject) {
  item.subject = item.subject.replace(` (#${ref.issue})`, '');
  }
  });
  