fix compile error with vs2015 and new dmlc-core (#4034)
fix compile error with vs2015 and new dmlc-core (#4034)


rishita/mxnet,arikpoz/mxnet,tlby/mxnet,lxn2/mxnet,lxn2/mxnet,ZihengJiang/mxnet,leezu/mxnet,xcgoner/dist-mxnet,DickJC123/mxnet,zhreshold/mxnet,crazy-cat/incubator-mxnet,zhreshold/mxnet,coder-james/mxnet,gautamkmr/incubator-mxnet,jiajiechen/mxnet,navrasio/mxnet,hpi-xnor/BMXNet,hpi-xnor/BMXNet,kevinthesun/mxnet,smolix/incubator-mxnet,arank/mxnet,dmlc/mxnet,jamesliu/mxnet,indhub/mxnet,ShownX/incubator-mxnet,jennyzhang0215/incubator-mxnet,jermainewang/mxnet,rahul003/mxnet,antoan2/incubator-mxnet,larroy/mxnet,mbaijal/incubator-mxnet,jennyzhang0215/incubator-mxnet,luoyetx/mxnet,lxn2/mxnet,DR08/mxnet,DickJC123/mxnet,apaleyes/mxnet,hpi-xnor/BMXNet,likelyzhao/mxnet,arank/mxnet,leezu/mxnet,leezu/mxnet,lxn2/mxnet,madjam/mxnet,leezu/mxnet,dmlc/mxnet,ykim362/mxnet,hotpxl/mxnet,ZihengJiang/mxnet,ForkedReposBak/mxnet,danithaca/mxnet,EvanzzzZ/mxnet,dmlc/mxnet,precedenceguo/mxnet,xcgoner/dist-mxnet,likelyzhao/mxnet,leezu/mxnet,rahul003/mxnet,danithaca/mxnet,Prasad9/incubator-mxnet,stefanhenneking/mxnet,CodingCat/mxnet,larroy/mxnet,reminisce/mxnet,coder-james/mxnet,Ldpe2G/mxnet,stefanhenneking/mxnet,pluskid/mxnet,yuruofeifei/mxnet,weleen/mxnet,arikpoz/mxnet,kevinthesun/mxnet,madjam/mxnet,precedenceguo/mxnet,Northrend/mxnet,solin319/incubator-mxnet,nicklhy/mxnet,stefanhenneking/mxnet,vikingMei/mxnet,mbaijal/incubator-mxnet,DR08/mxnet,Mega-DatA-Lab/mxnet,sergeykolychev/mxnet,szha/mxnet,dmlc/mxnet,Guneet-Dhillon/mxnet,ykim362/mxnet,szha/mxnet,sxjscience/mxnet,saurabh3949/mxnet,ForkedReposBak/mxnet,solin319/incubator-mxnet,antoan2/incubator-mxnet,thirdwing/mxnet,nicklhy/mxnet,ptrendx/mxnet,yajiedesign/mxnet,zhreshold/mxnet,vikingMei/mxnet,ForkedReposBak/mxnet,thirdwing/mxnet,arank/mxnet,fullfanta/mxnet,hotpxl/mxnet,gautamkmr/incubator-mxnet,rishita/mxnet,solin319/incubator-mxnet,arank/mxnet,sergeykolychev/mxnet,kevinthesun/mxnet,wangyum/mxnet,Northrend/mxnet,Prasad9/incubator-mxnet,Ldpe2G/mxnet,likelyzhao/mxnet,pluskid/mxnet,Guneet-Dhillon/mxnet,gautamkmr/incubator-mxnet,nicklhy/mxnet,hesseltuinhof/mxnet,kkk669/mxnet,saurabh3949/mxnet,danithaca/mxnet,tlby/mxnet,Guneet-Dhillon/mxnet,ykim362/mxnet,ptrendx/mxnet,arank/mxnet,piiswrong/mxnet,coder-james/mxnet,solin319/incubator-mxnet,wangyum/mxnet,CodingCat/mxnet,Ldpe2G/mxnet,larroy/mxnet,ptrendx/mxnet,vikingMei/mxnet,sergeykolychev/mxnet,saurabh3949/mxnet,kevinthesun/mxnet,kkk669/mxnet,eric-haibin-lin/mxnet,apache/incubator-mxnet,zhreshold/mxnet,ykim362/mxnet,thirdwing/mxnet,nicklhy/mxnet,tornadomeet/mxnet,ykim362/mxnet,TuSimple/mxnet,jamesliu/mxnet,jermainewang/mxnet,CodingCat/mxnet,yuruofeifei/mxnet,precedenceguo/mxnet,yajiedesign/mxnet,jiajiechen/mxnet,hotpxl/mxnet,crazy-cat/incubator-mxnet,rishita/mxnet,kevinthesun/mxnet,tornadomeet/mxnet,weleen/mxnet,Mega-DatA-Lab/mxnet,tlby/mxnet,gautamkmr/incubator-mxnet,tlby/mxnet,zhreshold/mxnet,crazy-cat/incubator-mxnet,navrasio/mxnet,formath/mxnet,gautamkmr/incubator-mxnet,DR08/mxnet,luoyetx/mxnet,hesseltuinhof/mxnet,apaleyes/mxnet,arank/mxnet,mbaijal/incubator-mxnet,antoan2/incubator-mxnet,smolix/incubator-mxnet,eric-haibin-lin/mxnet,yajiedesign/mxnet,ShownX/incubator-mxnet,leezu/mxnet,ShownX/incubator-mxnet,arikpoz/mxnet,fullfanta/mxnet,ptrendx/mxnet,precedenceguo/mxnet,rahul003/mxnet,jiajiechen/mxnet,kkk669/mxnet,formath/mxnet,szha/mxnet,tlby/mxnet,piiswrong/mxnet,smolix/incubator-mxnet,ykim362/mxnet,ptrendx/mxnet,jennyzhang0215/incubator-mxnet,jennyzhang0215/incubator-mxnet,jamesliu/mxnet,EvanzzzZ/mxnet,ZihengJiang/mxnet,DR08/mxnet,gautamkmr/incubator-mxnet,apaleyes/mxnet,jermainewang/mxnet,wangyum/mxnet,lxn2/mxnet,mbaijal/incubator-mxnet,TuSimple/mxnet,antoan2/incubator-mxnet,madjam/mxnet,szha/mxnet,arank/mxnet,tornadomeet/mxnet,gautamkmr/incubator-mxnet,larroy/mxnet,indhub/mxnet,yuruofeifei/mxnet,EvanzzzZ/mxnet,thirdwing/mxnet,zhreshold/mxnet,TuSimple/mxnet,weleen/mxnet,reminisce/mxnet,DR08/mxnet,tlby/mxnet,zhreshold/mxnet,Ldpe2G/mxnet,solin319/incubator-mxnet,eric-haibin-lin/mxnet,luoyetx/mxnet,crazy-cat/incubator-mxnet,stefanhenneking/mxnet,navrasio/mxnet,sxjscience/mxnet,navrasio/mxnet,lxn2/mxnet,likelyzhao/mxnet,leezu/mxnet,Ldpe2G/mxnet,Ldpe2G/mxnet,kkk669/mxnet,yuruofeifei/mxnet,ZihengJiang/mxnet,weleen/mxnet,szha/mxnet,Northrend/mxnet,rishita/mxnet,hotpxl/mxnet,kkk669/mxnet,leezu/mxnet,luoyetx/mxnet,thirdwing/mxnet,formath/mxnet,jermainewang/mxnet,yajiedesign/mxnet,jennyzhang0215/incubator-mxnet,mbaijal/incubator-mxnet,Mega-DatA-Lab/mxnet,thirdwing/mxnet,EvanzzzZ/mxnet,yuruofeifei/mxnet,szha/mxnet,lxn2/mxnet,arikpoz/mxnet,luoyetx/mxnet,jiajiechen/mxnet,rishita/mxnet,formath/mxnet,jamesliu/mxnet,nicklhy/mxnet,sxjscience/mxnet,dmlc/mxnet,weleen/mxnet,antoan2/incubator-mxnet,smolix/incubator-mxnet,madjam/mxnet,Northrend/mxnet,vikingMei/mxnet,wangyum/mxnet,kkk669/mxnet,solin319/incubator-mxnet,piiswrong/mxnet,weleen/mxnet,antoan2/incubator-mxnet,formath/mxnet,piiswrong/mxnet,hotpxl/mxnet,pluskid/mxnet,coder-james/mxnet,arikpoz/mxnet,yajiedesign/mxnet,rishita/mxnet,navrasio/mxnet,kevinthesun/mxnet,coder-james/mxnet,kevinthesun/mxnet,tlby/mxnet,Prasad9/incubator-mxnet,jennyzhang0215/incubator-mxnet,coder-james/mxnet,Ldpe2G/mxnet,ForkedReposBak/mxnet,saurabh3949/mxnet,apaleyes/mxnet,jermainewang/mxnet,nicklhy/mxnet,mbaijal/incubator-mxnet,hotpxl/mxnet,CodingCat/mxnet,LinkHS/incubator-mxnet,ptrendx/mxnet,formath/mxnet,jamesliu/mxnet,kkk669/mxnet,formath/mxnet,xcgoner/dist-mxnet,Prasad9/incubator-mxnet,vikingMei/mxnet,xcgoner/dist-mxnet,wangyum/mxnet,jamesliu/mxnet,tornadomeet/mxnet,ykim362/mxnet,yuruofeifei/mxnet,likelyzhao/mxnet,Ldpe2G/mxnet,nicklhy/mxnet,Guneet-Dhillon/mxnet,saurabh3949/mxnet,fullfanta/mxnet,rahul003/mxnet,sergeykolychev/mxnet,indhub/mxnet,hesseltuinhof/mxnet,pluskid/mxnet,fullfanta/mxnet,EvanzzzZ/mxnet,DickJC123/mxnet,likelyzhao/mxnet,navrasio/mxnet,smolix/incubator-mxnet,LinkHS/incubator-mxnet,hpi-xnor/BMXNet,reminisce/mxnet,larroy/mxnet,zhreshold/mxnet,arank/mxnet,jiajiechen/mxnet,sergeykolychev/mxnet,jermainewang/mxnet,ForkedReposBak/mxnet,yuruofeifei/mxnet,LinkHS/incubator-mxnet,ShownX/incubator-mxnet,eric-haibin-lin/mxnet,danithaca/mxnet,saurabh3949/mxnet,mbaijal/incubator-mxnet,indhub/mxnet,jamesliu/mxnet,smolix/incubator-mxnet,hotpxl/mxnet,thirdwing/mxnet,arikpoz/mxnet,tlby/mxnet,fullfanta/mxnet,sxjscience/mxnet,sergeykolychev/mxnet,precedenceguo/mxnet,jennyzhang0215/incubator-mxnet,ZihengJiang/mxnet,rahul003/mxnet,danithaca/mxnet,larroy/mxnet,jiajiechen/mxnet,arikpoz/mxnet,likelyzhao/mxnet,piiswrong/mxnet,weleen/mxnet,vikingMei/mxnet,dmlc/mxnet,eric-haibin-lin/mxnet,szha/mxnet,Northrend/mxnet,Mega-DatA-Lab/mxnet,dmlc/mxnet,ShownX/incubator-mxnet,jamesliu/mxnet,ForkedReposBak/mxnet,yajiedesign/mxnet,hpi-xnor/BMXNet,eric-haibin-lin/mxnet,piiswrong/mxnet,pluskid/mxnet,hesseltuinhof/mxnet,Guneet-Dhillon/mxnet,Northrend/mxnet,DickJC123/mxnet,piiswrong/mxnet,Northrend/mxnet,eric-haibin-lin/mxnet,ptrendx/mxnet,vikingMei/mxnet,Mega-DatA-Lab/mxnet,Guneet-Dhillon/mxnet,saurabh3949/mxnet,antoan2/incubator-mxnet,dmlc/mxnet,rishita/mxnet,hesseltuinhof/mxnet,smolix/incubator-mxnet,luoyetx/mxnet,reminisce/mxnet,apache/incubator-mxnet,rahul003/mxnet,DR08/mxnet,crazy-cat/incubator-mxnet,rahul003/mxnet,EvanzzzZ/mxnet,hpi-xnor/BMXNet,CodingCat/mxnet,jermainewang/mxnet,coder-james/mxnet,luoyetx/mxnet,tornadomeet/mxnet,fullfanta/mxnet,rishita/mxnet,solin319/incubator-mxnet,antoan2/incubator-mxnet,arikpoz/mxnet,vikingMei/mxnet,lxn2/mxnet,indhub/mxnet,larroy/mxnet,hotpxl/mxnet,xcgoner/dist-mxnet,LinkHS/incubator-mxnet,hpi-xnor/BMXNet,madjam/mxnet,ShownX/incubator-mxnet,EvanzzzZ/mxnet,sergeykolychev/mxnet,ZihengJiang/mxnet,piiswrong/mxnet,navrasio/mxnet,rahul003/mxnet,danithaca/mxnet,apaleyes/mxnet,Prasad9/incubator-mxnet,rahul003/mxnet,jennyzhang0215/incubator-mxnet,Mega-DatA-Lab/mxnet,fullfanta/mxnet,jiajiechen/mxnet,danithaca/mxnet,luoyetx/mxnet,kkk669/mxnet,Mega-DatA-Lab/mxnet,crazy-cat/incubator-mxnet,smolix/incubator-mxnet,sergeykolychev/mxnet,madjam/mxnet,sergeykolychev/mxnet,LinkHS/incubator-mxnet,yajiedesign/mxnet,fullfanta/mxnet,sxjscience/mxnet,crazy-cat/incubator-mxnet,yajiedesign/mxnet,mbaijal/incubator-mxnet,arikpoz/mxnet,sxjscience/mxnet,stefanhenneking/mxnet,EvanzzzZ/mxnet,weleen/mxnet,TuSimple/mxnet,hpi-xnor/BMXNet,yuruofeifei/mxnet,Prasad9/incubator-mxnet,hesseltuinhof/mxnet,LinkHS/incubator-mxnet,hesseltuinhof/mxnet,eric-haibin-lin/mxnet,kevinthesun/mxnet,zhreshold/mxnet,arank/mxnet,crazy-cat/incubator-mxnet,jiajiechen/mxnet,stefanhenneking/mxnet,precedenceguo/mxnet,pluskid/mxnet,yajiedesign/mxnet,sxjscience/mxnet,thirdwing/mxnet,eric-haibin-lin/mxnet,Ldpe2G/mxnet,indhub/mxnet,tlby/mxnet,Prasad9/incubator-mxnet,precedenceguo/mxnet,Guneet-Dhillon/mxnet,hpi-xnor/BMXNet,madjam/mxnet,apaleyes/mxnet,leezu/mxnet,apache/incubator-mxnet,madjam/mxnet,Guneet-Dhillon/mxnet,mbaijal/incubator-mxnet,TuSimple/mxnet,pluskid/mxnet,ptrendx/mxnet,vikingMei/mxnet,LinkHS/incubator-mxnet,precedenceguo/mxnet,formath/mxnet,DR08/mxnet,nicklhy/mxnet,xcgoner/dist-mxnet,likelyzhao/mxnet,indhub/mxnet,stefanhenneking/mxnet,ykim362/mxnet,ptrendx/mxnet,Prasad9/incubator-mxnet,ZihengJiang/mxnet,coder-james/mxnet,szha/mxnet,Guneet-Dhillon/mxnet,precedenceguo/mxnet,kkk669/mxnet,hesseltuinhof/mxnet,CodingCat/mxnet,formath/mxnet,navrasio/mxnet,kevinthesun/mxnet,antoan2/incubator-mxnet,weleen/mxnet,thirdwing/mxnet,danithaca/mxnet,navrasio/mxnet,sxjscience/mxnet,xcgoner/dist-mxnet,ShownX/incubator-mxnet,coder-james/mxnet,apaleyes/mxnet,fullfanta/mxnet,larroy/mxnet,LinkHS/incubator-mxnet,luoyetx/mxnet,tornadomeet/mxnet,TuSimple/mxnet,Northrend/mxnet,piiswrong/mxnet,pluskid/mxnet,sxjscience/mxnet,Northrend/mxnet,wangyum/mxnet,madjam/mxnet,ForkedReposBak/mxnet,ZihengJiang/mxnet,apaleyes/mxnet,gautamkmr/incubator-mxnet,rishita/mxnet,reminisce/mxnet,ForkedReposBak/mxnet,jermainewang/mxnet,ZihengJiang/mxnet,jermainewang/mxnet,ptrendx/mxnet,xcgoner/dist-mxnet,szha/mxnet,TuSimple/mxnet,wangyum/mxnet,DR08/mxnet,tornadomeet/mxnet,Mega-DatA-Lab/mxnet,pluskid/mxnet,hotpxl/mxnet,indhub/mxnet,EvanzzzZ/mxnet,tlby/mxnet,indhub/mxnet,DR08/mxnet,CodingCat/mxnet,danithaca/mxnet,lxn2/mxnet,apaleyes/mxnet,reminisce/mxnet,Mega-DatA-Lab/mxnet,ShownX/incubator-mxnet,wangyum/mxnet,stefanhenneking/mxnet,ShownX/incubator-mxnet,yuruofeifei/mxnet,TuSimple/mxnet,Prasad9/incubator-mxnet,reminisce/mxnet,stefanhenneking/mxnet,ykim362/mxnet,CodingCat/mxnet,solin319/incubator-mxnet,apache/incubator-mxnet,larroy/mxnet,gautamkmr/incubator-mxnet,CodingCat/mxnet,jennyzhang0215/incubator-mxnet,hesseltuinhof/mxnet,tornadomeet/mxnet,jiajiechen/mxnet,smolix/incubator-mxnet,xcgoner/dist-mxnet,ForkedReposBak/mxnet,reminisce/mxnet,jamesliu/mxnet,solin319/incubator-mxnet,crazy-cat/incubator-mxnet,nicklhy/mxnet,saurabh3949/mxnet,likelyzhao/mxnet,tornadomeet/mxnet,reminisce/mxnet,dmlc/mxnet,LinkHS/incubator-mxnet,TuSimple/mxnet,saurabh3949/mxnet,TuSimple/mxnet,wangyum/mxnet,reminisce/mxnet