Fix CBOW bug (optimization 2)
Fix CBOW bug (optimization 2)

ELind77/gensim,macks22/gensim,RaRe-Technologies/gensim,ziky90/gensim,summanlp/gensim,RaRe-Technologies/gensim,pombredanne/gensim,davechallis/gensim,macks22/gensim,ELind77/gensim,tzoiker/gensim,akutuzov/gensim,isohyt/gensim,manasRK/gensim,akutuzov/gensim,tzoiker/gensim,quole/gensim,pombredanne/gensim,robotcator/gensim,Kreiswolke/gensim,isohyt/gensim,bhargavvader/gensim,quole/gensim,RaRe-Technologies/gensim,bhargavvader/gensim,pombredanne/gensim,zachmayer/gensim,RaRe-Technologies/gensim,zachmayer/gensim,olavurmortensen/gensim,macks22/gensim,piskvorky/gensim,davechallis/gensim,ziky90/gensim,laic/gensim,ELind77/gensim,manasRK/gensim,markroxor/gensim,mattilyra/gensim,gojomo/gensim,Kreiswolke/gensim,Kreiswolke/gensim,jaksmid/gensim,loisaidasam/gensim,jaksmid/gensim,laic/gensim,piskvorky/gensim,dsquareindia/gensim,dsquareindia/gensim,davechallis/gensim,laic/gensim,robotcator/gensim,gojomo/gensim,ziky90/gensim,markroxor/gensim,isohyt/gensim,dsquareindia/gensim,piskvorky/gensim,tzoiker/gensim,bhargavvader/gensim,jaksmid/gensim,gojomo/gensim,zachmayer/gensim,robotcator/gensim,olavurmortensen/gensim,mattilyra/gensim,markroxor/gensim,summanlp/gensim,mattilyra/gensim,loisaidasam/gensim,gojomo/gensim,akutuzov/gensim,summanlp/gensim,olavurmortensen/gensim,manasRK/gensim,quole/gensim,loisaidasam/gensim