fixed build under windows
fixed build under windows

gentlefn/qjson,flavio/qjson,drizt/qjson,seem-sky/qjson,drizt/qjson,cbranch/qjson-qmakefriendly,qlands/qjson,gentlefn/qjson,seem-sky/qjson,coolshou/qjson,cbranch/qjson-qmakefriendly,qlands/qjson,flavio/qjson,coolshou/qjson