[kde-edu]: Small patch for GMM

[Vladimir]

Hello,

Recently one very small but important for Step optimization was applied in the 
vanilla GMM tree: 
http://svn.gna.org/viewcvs/getfem/trunk/getfem++/src/gmm/gmm_matrix.h?rev=2737&r1=2722&r2=2737

Can I apply the same patch for kde copy of GMM ?

-- 
      Best Regards,
        Vladimir