From 23ce4318768b718c82e01004d23f1abc9a9549ff Mon Sep 17 00:00:00 2001
From: Alexander Kremer <akremer@ripple.com>
Date: Fri, 9 Sep 2022 20:49:42 +0100
Subject: [PATCH] Remove const_cast usage

---
 src/ripple/rpc/BookChanges.h | 11 ++++-------
 1 file changed, 4 insertions(+), 7 deletions(-)

diff --git a/src/ripple/rpc/BookChanges.h b/src/ripple/rpc/BookChanges.h
index 5aef1c693..7d7978d3f 100644
--- a/src/ripple/rpc/BookChanges.h
+++ b/src/ripple/rpc/BookChanges.h
@@ -88,13 +88,10 @@ computeBookChanges(std::shared_ptr<L const> const& lpAccepted)
                 !node.isFieldPresent(sfPreviousFields))
                 continue;
 
-            STObject& finalFields = (const_cast<STObject&>(node))
-                                        .getField(sfFinalFields)
-                                        .downcast<STObject>();
-
-            STObject& previousFields = (const_cast<STObject&>(node))
-                                           .getField(sfPreviousFields)
-                                           .downcast<STObject>();
+            auto const& ffBase = node.peekAtField(sfFinalFields);
+            auto const& finalFields = ffBase.template downcast<STObject>();
+            auto const& pfBase = node.peekAtField(sfPreviousFields);
+            auto const& previousFields = pfBase.template downcast<STObject>();
 
             // defensive case that should never be hit
             if (!finalFields.isFieldPresent(sfTakerGets) ||