serialize topics (#82911)

Author: ti360gh

src/savegame_json.cpp

@@ -1931,6 +1931,8 @@ void dialogue_chatbin::serialize( JsonOut &json ) const
     json.member( "talk_stranger_friendly", talk_stranger_friendly );
     json.member( "talk_stranger_neutral", talk_stranger_neutral );
     json.member( "talk_friend_guard", talk_friend_guard );
+    json.member( "talk_mission_inquire", talk_mission_inquire );
+    json.member( "talk_mission_describe_urgent", talk_mission_describe_urgent );
 
     if( mission_selected != nullptr ) {
         json.member( "mission_selected", mission_selected->get_id() );
@@ -1971,6 +1973,8 @@ void dialogue_chatbin::deserialize( const JsonObject &data )
     data.read( "style", style );
     data.read( "dialogue_spell", dialogue_spell );
     data.read( "proficiency", proficiency );
+    data.read( "talk_mission_inquire", talk_mission_inquire );
+    data.read( "talk_mission_describe_urgent", talk_mission_describe_urgent );
 
     std::vector<int> tmpmissions;
     data.read( "missions", tmpmissions );