message: actually fix clippy
diff: @@ -151,7 +151,7 @@ fn non_null_array() {
  .unwrap();
  let array = array_from_sql(&buf).unwrap();
  - assert!(array.has_nulls());
  + assert!(!array.has_nulls());
  assert_eq!(array.element_type(), 10);
  assert_eq!(array.dimensions().collect::<Vec<_>>().unwrap(), dimensions);
  assert_eq!(array.values().collect::<Vec<_>>().unwrap(), values);
  