New upstream version 1.49.0~beta.4+dfsg1

[rustc.git] / compiler / rustc_infer / src / infer / free_regions.rs

diff --git a/compiler/rustc_infer/src/infer/free_regions.rs b/compiler/rustc_infer/src/infer/free_regions.rs
index ffe5fb172bea3ec4096a6e9d65e8a50414a46420..32f73237dd410411d3b51dd8c437928af1cfdfe2 100644 (file)
--- a/compiler/rustc_infer/src/infer/free_regions.rs
+++ b/compiler/rustc_infer/src/infer/free_regions.rs
@@ -157,7 +157,7 @@ impl<'tcx> FreeRegionRelations<'tcx> for FreeRegionMap<'tcx> {
 
 impl<'a, 'tcx> Lift<'tcx> for FreeRegionMap<'a> {
     type Lifted = FreeRegionMap<'tcx>;
-    fn lift_to_tcx(&self, tcx: TyCtxt<'tcx>) -> Option<FreeRegionMap<'tcx>> {
-        self.relation.maybe_map(|&fr| tcx.lift(&fr)).map(|relation| FreeRegionMap { relation })
+    fn lift_to_tcx(self, tcx: TyCtxt<'tcx>) -> Option<FreeRegionMap<'tcx>> {
+        self.relation.maybe_map(|&fr| tcx.lift(fr)).map(|relation| FreeRegionMap { relation })
     }
 }