adding sanity checks to ClassNLLCriterion
adding sanity checks to ClassNLLCriterion

joeyhng/nn,PraveerSINGH/nn,apaszke/nn,xianjiec/nn,jonathantompson/nn,nicholas-leonard/nn,diz-vara/nn,colesbury/nn,elbamos/nn,eriche2016/nn,jhjin/nn,kmul00/nn,sagarwaghmare69/nn,caldweln/nn