New Doxygen warnings in 6.0.0

[abitmore]

Description

/home/ubuntu/work/bitshares-core-6.0/libraries/wallet/operation_printer.cpp:367: warning: no uniquely matching class member found for
  std::string graphene::wallet::detail::operation_result_printer::operator()(const object_id_type &oid) const
Possible candidates:
  std::string graphene::wallet::detail::operation_result_printer::operator()(const graphene::protocol::void_result &x) const' at line 47 of file /home/ubuntu/work/bitshares-core-6.0/libraries/wallet/operation_printer.hpp
  std::string graphene::wallet::detail::operation_result_printer::operator()(const graphene::protocol::object_id_type &oid) const' at line 48 of file /home/ubuntu/work/bitshares-core-6.0/libraries/wallet/operation_printer.hpp
  std::string graphene::wallet::detail::operation_result_printer::operator()(const graphene::protocol::asset &a) const' at line 49 of file /home/ubuntu/work/bitshares-core-6.0/libraries/wallet/operation_printer.hpp
  std::string graphene::wallet::detail::operation_result_printer::operator()(const graphene::protocol::generic_operation_result &r) const' at line 50 of file /home/ubuntu/work/bitshares-core-6.0/libraries/wallet/operation_printer.hpp
  std::string graphene::wallet::detail::operation_result_printer::operator()(const graphene::protocol::generic_exchange_operation_result &r) const' at line 51 of file /home/ubuntu/work/bitshares-core-6.0/libraries/wallet/operation_printer.hpp
  std::string graphene::wallet::detail::operation_result_printer::operator()(const graphene::protocol::extendable_operation_result &r) const' at line 52 of file /home/ubuntu/work/bitshares-core-6.0/libraries/wallet/operation_printer.hpp

See also: #2213

Build Environment
Details about the build environment, including the relevant required libraries. Much of this information can be found in the CMakeFiles/CMakeOutput.log.

• Host OS: Ubuntu 18.04 LTS
• Source Branch/Tag: 6.0.0
• Doxygen 1.8.13

CORE TEAM TASK LIST

• Evaluate Build Error
• Provide build guidance
• Create Bug Report

[abitmore]

Fixed by #2659.