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Remove unnecessary &mut/ref mut pair
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WaffleLapkin committed Sep 28, 2023
1 parent a7f3c4e commit e0abb98
Showing 1 changed file with 1 addition and 1 deletion.
2 changes: 1 addition & 1 deletion compiler/rustc_middle/src/mir/traversal.rs
Original file line number Diff line number Diff line change
Expand Up @@ -178,7 +178,7 @@ impl<'a, 'tcx> Postorder<'a, 'tcx> {
// When we yield `C` and call `traverse_successor`, we push `B` to the stack, but
// since we've already visited `E`, that child isn't added to the stack. The last
// two iterations yield `B` and finally `A` for a final traversal of [E, D, C, B, A]
while let Some(&mut (_, ref mut iter)) = self.visit_stack.last_mut() && let Some(bb) = iter.next_back() {
while let Some((_, iter)) = self.visit_stack.last_mut() && let Some(bb) = iter.next_back() {
if self.visited.insert(bb) {
if let Some(term) = &self.basic_blocks[bb].terminator {
self.visit_stack.push((bb, term.successors()));
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