Querify early_lint_checks.

compiler/rustc_ast_lowering/src/lib.rs

@@ -436,6 +436,7 @@ fn compute_hir_hash(
 pub fn lower_to_hir(tcx: TyCtxt<'_>, (): ()) -> hir::Crate<'_> {
     let sess = tcx.sess;
     tcx.ensure().output_filenames(());
+    let _ = tcx.early_lint_checks(()); // Borrows `resolver_for_lowering`.
     let (mut resolver, krate) = tcx.resolver_for_lowering(()).steal();
 
     let ast_index = index_crate(&resolver.node_id_to_def_id, &krate);