message: clippy: fix needless_bool warnings
diff: @@ -175,13 +175,7 @@ impl FastFieldReader for I64FastFieldReader {
  fn is_enabled(field_type: &FieldType) -> bool {
  match field_type {
  - &FieldType::I64(ref integer_options) => {
  - if integer_options.is_fast() {
  - true
  - } else {
  - false
  - }
  - }
  + &FieldType::I64(ref integer_options) => integer_options.is_fast(),
  _ => false,
  }
  }
  