intravisit: abstract over HIR Map

1 files changed, 4 insertions, 1 deletions

diff --git a/src/librustc_traits/lowering/mod.rs b/src/librustc_traits/lowering/mod.rs
index 47009ac4123..647d32d45f6 100644
--- a/src/librustc_traits/lowering/mod.rs
+++ b/src/librustc_traits/lowering/mod.rs
@@ -2,6 +2,7 @@ mod environment;
 
 use rustc::hir::intravisit::{self, NestedVisitorMap, Visitor};
 use rustc::hir::map::definitions::DefPathData;
+use rustc::hir::map::Map;
 use rustc::traits::{
     Clause, Clauses, DomainGoal, FromEnv, GoalKind, PolyDomainGoal, ProgramClause,
     ProgramClauseCategory, WellFormed, WhereClause,
@@ -600,7 +601,9 @@ impl ClauseDumper<'tcx> {
 }
 
 impl Visitor<'tcx> for ClauseDumper<'tcx> {
-    fn nested_visit_map<'this>(&'this mut self) -> NestedVisitorMap<'this, 'tcx> {
+    type Map = Map<'tcx>;
+
+    fn nested_visit_map<'this>(&'this mut self) -> NestedVisitorMap<'this, Self::Map> {
         NestedVisitorMap::OnlyBodies(&self.tcx.hir())
     }