replaced some map_or with map_or_else

2021-02-24 01:02:05 +03:00
parent 5ff1be197e
commit c75c4a579b
12 changed files with 82 additions and 70 deletions
--- a/compiler/rustc_codegen_llvm/src/debuginfo/metadata.rs
+++ b/compiler/rustc_codegen_llvm/src/debuginfo/metadata.rs
@@ -2372,7 +2372,7 @@ fn compute_type_parameters(cx: &CodegenCx<'ll, 'tcx>, ty: Ty<'tcx>) -> &'ll DIAr
    fn get_parameter_names(cx: &CodegenCx<'_, '_>, generics: &ty::Generics) -> Vec<Symbol> {
        let mut names = generics
            .parent
-            .map_or(vec![], |def_id| get_parameter_names(cx, cx.tcx.generics_of(def_id)));
+            .map_or_else(|| vec![], |def_id| get_parameter_names(cx, cx.tcx.generics_of(def_id)));
        names.extend(generics.params.iter().map(|param| param.name));
        names
    }