review comment

rust-lang · Jun 19, 2019 · 8a415d1 · 8a415d1
1 parent 3dd3c6d
commit 8a415d1
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/librustc_mir/borrow_check/mod.rs b/src/librustc_mir/borrow_check/mod.rs
@@ -1070,7 +1070,7 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> {
 
                 (Reservation(WriteKind::MutableBorrow(bk)), BorrowKind::Shallow)
                 | (Reservation(WriteKind::MutableBorrow(bk)), BorrowKind::Shared) if {
-                    tcx.migrate_borrowck() && this.borrow_set.location_map.get(&location).is_some()
+                    tcx.migrate_borrowck() && this.borrow_set.location_map.contains_key(&location)
                 } => {
                     let bi = this.borrow_set.location_map[&location];
                     debug!(