fixed ldamodel unittest that failed on Windows w/ older numpy
fixed ldamodel unittest that failed on Windows w/ older numpy

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