fix compilation error with VS 2013
fix compilation error with VS 2013

glglwty/rDSN,ykwd/rDSN,qinzuoyan/rDSN,lshmouse/rDSN,Microsoft/rDSN,goksyli/rDSN,imzhenyu/rDSN,Microsoft/rDSN,glglwty/rDSN,ykwd/rDSN,shengofsun/rDSN,Microsoft/rDSN,imzhenyu/rDSN,mcfatealan/rDSN,imzhenyu/rDSN,lshmouse/rDSN,mcfatealan/rDSN,shengofsun/rDSN,pandaworrior/rDSN,lshmouse/rDSN,ykwd/rDSN,imzhenyu/rDSN,pandaworrior/rDSN,qinzuoyan/rDSN,qinzuoyan/rDSN,qinzuoyan/rDSN,shengofsun/rDSN,imzhenyu/rDSN,qinzuoyan/rDSN,lshmouse/rDSN,glglwty/rDSN,Microsoft/rDSN,lshmouse/rDSN,imzhenyu/rDSN,qinzuoyan/rDSN,Microsoft/rDSN,glglwty/rDSN,pandaworrior/rDSN,Microsoft/rDSN,pandaworrior/rDSN,Microsoft/rDSN,Microsoft/rDSN,goksyli/rDSN,qinzuoyan/rDSN,pandaworrior/rDSN,shengofsun/rDSN,shengofsun/rDSN,qinzuoyan/rDSN,mcfatealan/rDSN,goksyli/rDSN,shengofsun/rDSN,goksyli/rDSN,imzhenyu/rDSN,ykwd/rDSN,ykwd/rDSN,shengofsun/rDSN,lshmouse/rDSN,lshmouse/rDSN,imzhenyu/rDSN,lshmouse/rDSN,shengofsun/rDSN,glglwty/rDSN,mcfatealan/rDSN