Make `relate_type_and_mut` public

diff --git a/compiler/rustc_middle/src/ty/relate.rs b/compiler/rustc_middle/src/ty/relate.rs
index 872d12cac9384ab086d829be8e856facb9c1c643..3f426b13688fe94302ca6ffd98c917d5913f0250 100644 (file)
--- a/compiler/rustc_middle/src/ty/relate.rs
+++ b/compiler/rustc_middle/src/ty/relate.rs
@@ -112,7 +112,7 @@ fn relate<R: TypeRelation<'tcx>>(
 ///////////////////////////////////////////////////////////////////////////
 // Relate impls
 
-fn relate_type_and_mut<'tcx, R: TypeRelation<'tcx>>(
+pub fn relate_type_and_mut<'tcx, R: TypeRelation<'tcx>>(
     relation: &mut R,
     a: ty::TypeAndMut<'tcx>,
     b: ty::TypeAndMut<'tcx>,