clippy: allow new without default

src/atom_table.rs

@@ -1,3 +1,5 @@
+#![allow(clippy::new_without_default)] // annotating structs annotated with #[bitfield] doesn't work
+
 use crate::parser::ast::MAX_ARITY;
 use crate::raw_block::*;
 use crate::rcu::{Rcu, RcuRef};