Comment on “Classical Langevin dynamics of a charged particle moving on a sphere and diamagnetism: A surprise” by Kumar N. and Kumar K. VijayAvinash A. Deshpande, K. Vijay Kumar and N. KumarEPL, 97 1 (2012) 17003DOI: https://doi.org/10.1209/0295-5075/97/17003