Avoid hitting IntoQueryParam<P> for &'a P impl

This is removed.

Author: nbdd0121

src/main.rs

@@ -4,7 +4,6 @@
 
 #![feature(rustc_private)]
 #![feature(box_patterns)]
-#![feature(if_let_guard)]
 #![feature(never_type)]
 #![feature(try_blocks)]
 // Used in monomorphize collector

src/mir/elaborate_drop.rs

@@ -267,19 +267,18 @@ where
             // impl_item_refs may be empty if drop fn is not implemented in 'impl AsyncDrop for ...'
             // (#140974).
             // Such code will report error, so just generate sync drop here and return
-            let Some(drop_fn_def_id) = tcx
-                .associated_item_def_ids(drop_trait)
-                .first()
-                .and_then(|def_id| {
-                    if tcx.def_kind(def_id) == DefKind::AssocFn
-                        && tcx.check_args_compatible(*def_id, trait_args)
-                    {
-                        Some(def_id)
-                    } else {
-                        None
-                    }
-                })
-                .copied()
+            let Some(drop_fn_def_id) =
+                tcx.associated_item_def_ids(drop_trait)
+                    .first()
+                    .and_then(|&def_id| {
+                        if tcx.def_kind(def_id) == DefKind::AssocFn
+                            && tcx.check_args_compatible(def_id, trait_args)
+                        {
+                            Some(def_id)
+                        } else {
+                            None
+                        }
+                    })
             else {
                 tcx.dcx().span_delayed_bug(
                     self.elaborator.body().span,

src/monomorphize_collector.rs

@@ -82,7 +82,7 @@ fn custom_coerce_unsize_info<'tcx>(
         Ok(traits::ImplSource::UserDefined(traits::ImplSourceUserDefinedData {
             impl_def_id,
             ..
-        })) => Ok(tcx.coerce_unsized_info(impl_def_id)?.custom_kind.unwrap()),
+        })) => Ok(tcx.coerce_unsized_info(*impl_def_id)?.custom_kind.unwrap()),
         impl_source => {
             bug!("invalid `CoerceUnsized` impl_source: {:?}", impl_source);
         }