Fix RNG bug
Fix RNG bug

Whenever target_index was equal to word_index, no new random number was
generated.

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