[ntuple] Fix constructor of RColumnElement<RColumnSwitch>
[ntuple] Fix constructor of RColumnElement<RColumnSwitch>

olifre/root,olifre/root,olifre/root,olifre/root,olifre/root,olifre/root,olifre/root,olifre/root,olifre/root,olifre/root,olifre/root