From 6c80e0240d89eb425467f825e448cba4d1f6bbfa Mon Sep 17 00:00:00 2001
From: Nicholas Nethercote <n.nethercote@gmail.com>
Date: Wed, 5 Jul 2023 07:30:43 +1000
Subject: [PATCH] Use `iter()` instead of `iter_mut()` in one place.

---
 compiler/rustc_monomorphize/src/partitioning.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/compiler/rustc_monomorphize/src/partitioning.rs b/compiler/rustc_monomorphize/src/partitioning.rs
index 14d5e068638..4abdce52088 100644
--- a/compiler/rustc_monomorphize/src/partitioning.rs
+++ b/compiler/rustc_monomorphize/src/partitioning.rs
@@ -460,7 +460,7 @@ fn internalize_symbols<'tcx>(
     let single_codegen_unit = codegen_units.len() == 1;
 
     if !single_codegen_unit {
-        for cgu in codegen_units.iter_mut() {
+        for cgu in codegen_units.iter() {
             for item in cgu.items().keys() {
                 // If there is more than one codegen unit, we need to keep track
                 // in which codegen units each monomorphization is placed.