Auto merge of #116228 - bvanjoi:fix-116164, r=cjgillot

resolve: skip underscore character during candidate lookup

Fixes #116164

In use statement, an underscore is merely a placeholder symbol and does not bind to any name. Therefore, it can be safely ignored.

compiler/rustc_resolve/src/diagnostics.rs

@@ -1169,6 +1169,10 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
                     return;
                 }
 
+                if ident.name == kw::Underscore {
+                    return;
+                }
+
                 let child_accessible =
                     accessible && this.is_accessible_from(name_binding.vis, parent_scope.module);