fix gcc warning of missing override (#2001)
fix gcc warning of missing override (#2001)

Co-authored-by: Lieven de Cock <a486637fc71dd4228f619aaf8b8e17fce55162d3@linux-2x3u.suse>
cppformat/cppformat,alabuzhev/fmt,alabuzhev/fmt,cppformat/cppformat,alabuzhev/fmt,cppformat/cppformat