message: refactor(catchError): even smaller
diff: @@ -119,17 +119,7 @@ export function catchError<T, O extends ObservableInput<any>>(
  innerSub = source.subscribe(
  new OperatorSubscriber(subscriber, undefined, (err) => {
  - // NOTE: The try/catch is here instead of OperatorSubscriber because
  - // this is the only operator that requires a try/catch in the error handler
  - // adding it to OperatorSubscriber would add that weight to to something
  - // used by all other operators just to make this one operator smaller.
  - try {
  handledResult = from(selector(err, catchError(selector)(source)));
  - } catch (err) {
  - subscriber.error(err);
  - return;
  - }
  -
  if (innerSub) {
  innerSub.unsubscribe();
  innerSub = null;
  