Make `FunctionArgumentObligation` also use the "no allocation for misc" trick

1 files changed, 1 insertions, 1 deletions

diff --git a/compiler/rustc_trait_selection/src/traits/error_reporting/suggestions.rs b/compiler/rustc_trait_selection/src/traits/error_reporting/suggestions.rs
index 1522eedf7fe..ee3e9544b4d 100644
--- a/compiler/rustc_trait_selection/src/traits/error_reporting/suggestions.rs
+++ b/compiler/rustc_trait_selection/src/traits/error_reporting/suggestions.rs
@@ -1652,7 +1652,7 @@ impl<'a, 'tcx> InferCtxtExt<'tcx> for InferCtxt<'a, 'tcx> {
             debug!("maybe_note_obligation_cause_for_async_await: code={:?}", code);
             match code {
                 ObligationCauseCode::FunctionArgumentObligation { parent_code, .. } => {
-                    next_code = Some(parent_code.as_ref());
+                    next_code = Some(parent_code);
                 }
                 ObligationCauseCode::ImplDerivedObligation(cause) => {
                     let ty = cause.derived.parent_trait_pred.skip_binder().self_ty();