Compile fix in non-default CPP config
Compile fix in non-default CPP config

This fixes a regression introduced in
d7eaa5396093d2904e2e3194ba9f70cf6df33116, 8 days ago; I noticed this by
chance with intero (probably because it doesn't read the full config,
but whatever).

juhp/stack,mrkkrp/stack,anton-dessiatov/stack,mrkkrp/stack,anton-dessiatov/stack,martin-kolinek/stack,Blaisorblade/stack,AndrewRademacher/stack,deech/stack,Fuuzetsu/stack,AndreasPK/stack,AndrewRademacher/stack,martin-kolinek/stack,MichielDerhaeg/stack,AndreasPK/stack,MichielDerhaeg/stack,juhp/stack,deech/stack,Blaisorblade/stack,Fuuzetsu/stack