Assert defining anchor is set in take_opaque_types

compiler/rustc_traits/src/codegen.rs

@@ -82,7 +82,7 @@ pub fn codegen_select_candidate<'tcx>(
     // Opaque types may have gotten their hidden types constrained, but we can ignore them safely
     // as they will get constrained elsewhere, too.
     // (ouz-a) This is required for `type-alias-impl-trait/assoc-projection-ice.rs` to pass
-    let _ = infcx.inner.borrow_mut().opaque_type_storage.take_opaque_types();
+    let _ = infcx.take_opaque_types();
 
     Ok(&*tcx.arena.alloc(impl_source))
 }