maybe fix bug with mnist unit test
maybe fix bug with mnist unit test

FighterLYL/DeepCL,FighterLYL/DeepCL,pimms/DeepCL,pimms/DeepCL,MiniLight/DeepCL,MiniLight/DeepCL,FighterLYL/DeepCL,mrgloom/DeepCL,FighterLYL/DeepCL,Peilong/DeepCL,mrgloom/DeepCL,hughperkins/DeepCL,FighterLYL/DeepCL,hughperkins/DeepCL,MiniLight/DeepCL,MiniLight/DeepCL,pimms/DeepCL,mrgloom/DeepCL,hughperkins/DeepCL,mrgloom/DeepCL,pimms/DeepCL,mrgloom/DeepCL,Peilong/DeepCL,MiniLight/DeepCL,Peilong/DeepCL,Peilong/DeepCL,pimms/DeepCL,Peilong/DeepCL,hughperkins/DeepCL,hughperkins/DeepCL