AliasTermTy refactor: fixup clippy

Author: WaffleLapkin

clippy_utils/src/ty/mod.rs

@@ -696,7 +696,7 @@ fn sig_from_bounds<'tcx>(
                 inputs = Some(i);
             },
             ty::ClauseKind::Projection(p)
-                if Some(p.projection_term.def_id) == lang_items.fn_once_output()
+                if Some(p.projection_term.def_id()) == lang_items.fn_once_output()
                     && p.projection_term.self_ty() == ty =>
             {
                 if output.is_some() {
@@ -737,7 +737,7 @@ fn sig_for_projection<'tcx>(cx: &LateContext<'tcx>, ty: AliasTy<'tcx>) -> Option
                 }
                 inputs = Some(i);
             },
-            ty::ClauseKind::Projection(p) if Some(p.projection_term.def_id) == lang_items.fn_once_output() => {
+            ty::ClauseKind::Projection(p) if Some(p.projection_term.def_id()) == lang_items.fn_once_output() => {
                 if output.is_some() {
                     // Multiple different fn trait impls. Is this even allowed?
                     return None;