Simplify code

Author: Noratrieb

compiler/rustc_interface/src/proc_macro_decls.rs

@@ -4,21 +4,16 @@ use rustc_middle::ty::TyCtxt;
 use rustc_span::symbol::sym;
 
 fn proc_macro_decls_static(tcx: TyCtxt<'_>, (): ()) -> Option<LocalDefId> {
-    let mut finder = Finder { tcx, decls: None };
+    let mut decls = None;
 
     for id in tcx.hir().items() {
-        let attrs = finder.tcx.hir().attrs(id.hir_id());
-        if finder.tcx.sess.contains_name(attrs, sym::rustc_proc_macro_decls) {
-            finder.decls = Some(id.owner_id.def_id);
+        let attrs = tcx.hir().attrs(id.hir_id());
+        if tcx.sess.contains_name(attrs, sym::rustc_proc_macro_decls) {
+            decls = Some(id.owner_id.def_id);
         }
     }
 
-    finder.decls
-}
-
-struct Finder<'tcx> {
-    tcx: TyCtxt<'tcx>,
-    decls: Option<LocalDefId>,
+    decls
 }
 
 pub(crate) fn provide(providers: &mut Providers) {