Fix several small errors in the class test for the dense matrix specialization of the 'UpperMatrix' class template
Fix several small errors in the class test for the dense matrix specialization of the 'UpperMatrix' class template

honnibal/blaze-lib,yzxyzh/blaze-lib,byzhang/blaze,davidebaltieri31/blaze-lib,yzxyzh/blaze-lib,lsalamon/blaze-lib,nyotis/blaze-lib,byzhang/blaze-lib,amaniak/blaze-lib,amaniak/blaze-lib,ironm73/blaze-lib,amaniak/blaze-lib,dylanede/blaze-lib,lsalamon/blaze-lib,wsavoie/blaze-lib,byzhang/blaze,Manu343726/blaze-lib,ceramos/blaze-lib,byzhang/blaze-lib,davidebaltieri31/blaze-lib,ironm73/blaze-lib,dorofiykolya/blaze-lib,wdv4758h/blaze-lib,benjamingr/blaze-lib,benjamingr/blaze-lib,gnzlbg/blaze-lib,ColinGilbert/blaze-lib,ColinGilbert/blaze-lib,nyotis/blaze-lib,dorofiykolya/blaze-lib,wdv4758h/blaze-lib,honnibal/blaze-lib,ceramos/blaze-lib,benjamingr/blaze-lib,ironm73/blaze-lib,gnzlbg/blaze-lib,davidebaltieri31/blaze-lib,wsavoie/blaze-lib,wdv4758h/blaze-lib,ceramos/blaze-lib,byzhang/blaze-lib,yzxyzh/blaze-lib,lsalamon/blaze-lib,wsavoie/blaze-lib,ColinGilbert/blaze-lib,byzhang/blaze,honnibal/blaze-lib,dylanede/blaze-lib,Manu343726/blaze-lib,nyotis/blaze-lib,gnzlbg/blaze-lib,dylanede/blaze-lib,Manu343726/blaze-lib,dorofiykolya/blaze-lib