correct misspelled AttrVar in copier.rs
@@ -89,7 +89,7 @@ fn duplicate_term_impl(&mut self, addr: Addr) -> RedirectInfo
let rd = self.store(self.deref(ra));
match rd.clone() {
- Addr::AttrVal(h) | Addr::HeapCell(h) if h >= old_h =>
+ Addr::AttrVar(h) | Addr::HeapCell(h) if h >= old_h =>
self[threshold] = HeapCellValue::Addr(rd),
ra @ Addr::AttrVar(_) | ra @ Addr::HeapCell(..) | ra @ Addr::StackCell(..) =>
if ra == rd {
