Helper to concat outer and inner attributes
diff --git a/src/expr.rs b/src/expr.rs
index 7ba8fd2..bf4a803 100644
--- a/src/expr.rs
+++ b/src/expr.rs
@@ -2335,11 +2335,7 @@
         };
 
         Ok(ExprStruct {
-            attrs: {
-                let mut attrs = outer_attrs;
-                attrs.extend(inner_attrs);
-                attrs
-            },
+            attrs: private::attrs(outer_attrs, inner_attrs),
             brace_token: brace_token,
             path: path,
             fields: fields,