From 5e7acde8851ad5d1abd69d49fbed4b962025e1dc Mon Sep 17 00:00:00 2001
From: Milos Milosevic <mmilosevic@peerplays.com>
Date: Fri, 24 Feb 2023 15:26:30 +0100
Subject: [PATCH] Also cover account_update_operation

---
 libraries/chain/account_evaluator.cpp | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/libraries/chain/account_evaluator.cpp b/libraries/chain/account_evaluator.cpp
index ab3c3d83..2d064241 100644
--- a/libraries/chain/account_evaluator.cpp
+++ b/libraries/chain/account_evaluator.cpp
@@ -343,6 +343,20 @@ void_result account_update_evaluator::do_apply( const account_update_operation&
          a.top_n_control_flags = 0;
       }
       if( o.new_options ) a.options = *o.new_options;
+
+      if (!a.options.extensions.value.num_son.valid())
+      {
+         a.options.extensions.value = account_options::ext();
+         a.options.extensions.value.num_son = []{
+            flat_map<sidechain_type, uint16_t> num_son;
+            for(const auto& active_sidechain_type : all_sidechain_types){
+               num_son[active_sidechain_type] = 0;
+            }
+            return num_son;
+         }();
+
+      }
+
       if( o.extensions.value.owner_special_authority.valid() )
       {
          a.owner_special_authority = *(o.extensions.value.owner_special_authority);