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-rw-r--r--compiler/rustc_middle/src/mir/pretty.rs3
1 files changed, 1 insertions, 2 deletions
diff --git a/compiler/rustc_middle/src/mir/pretty.rs b/compiler/rustc_middle/src/mir/pretty.rs
index b2dd67fb16d..69dac038839 100644
--- a/compiler/rustc_middle/src/mir/pretty.rs
+++ b/compiler/rustc_middle/src/mir/pretty.rs
@@ -561,8 +561,7 @@ fn write_scope_tree(
         }
         indented_decl.push(';');
 
-        let local_name =
-            if local == RETURN_PLACE { " return place".to_string() } else { String::new() };
+        let local_name = if local == RETURN_PLACE { " return place" } else { "" };
 
         writeln!(
             w,