Remove unused part of return value from replace_bound_vars_with_placeholders

2020-06-28 20:27:59 +01:00
parent 1b07991574
commit d4d9e7f67f
5 changed files with 12 additions and 20 deletions
--- a/compiler/rustc_trait_selection/src/traits/project.rs
+++ b/compiler/rustc_trait_selection/src/traits/project.rs
@@ -167,7 +167,7 @@ pub(super) fn poly_project_and_unify_type<'cx, 'tcx>(

    let infcx = selcx.infcx();
    infcx.commit_if_ok(|_snapshot| {
-        let (placeholder_predicate, _) =
+        let placeholder_predicate =
            infcx.replace_bound_vars_with_placeholders(&obligation.predicate);

        let placeholder_obligation = obligation.with(placeholder_predicate);