 fix luaS_newuserdata return value
 fix luaS_newuserdata return value

chiuan/slua,leonardave/slua,LacusCon/slua,XingHong/slua,luzexi/slua-3rd-lib,yaukeywang/slua-old,dongxie/slua,Salada/slua,soulgame/slua,pangweiwei/slua,pangweiwei/slua,soulgame/slua,yaukeywang/slua,luzexi/slua-3rd,dongxie/slua,luzexi/slua-3rd,LacusCon/slua,yjpark/slua,yaukeywang/slua,jiangzhhhh/slua,lingkeyang/slua,thing-nacho/slua,thing-nacho/slua,takaaptech/slua,hlouis/slua,haolly/slua_source_note,zhukunqian/slua-1,thing-nacho/slua,LacusCon/slua,lyntel/slua,luzexi/slua-3rd,mr-kelly/slua,mr-kelly/slua,LacusCon/slua,zhukunqian/slua-1,pangweiwei/slua,mr-kelly/slua,houxuanfelix/slua,wang1986one/slua,DebugClub/slua,yjpark/slua,lingkeyang/slua,pangweiwei/slua,dayongxie/slua,yongkangchen/slua,Salada/slua,mr-kelly/slua,DebugClub/slua,luzexi/slua-3rd-lib,mr-kelly/slua,jiangzhhhh/slua,Roland0511/slua,yaukeywang/slua,lingkeyang/slua,hlouis/slua,jiangzhhhh/slua,luzexi/slua-3rd,angeldnd/slua,houxuanfelix/slua,luzexi/slua-3rd-lib,soulgame/slua,DebugClub/slua,chiuan/slua,luzexi/slua-3rd-lib,thing-nacho/slua,luzexi/slua-3rd,Roland0511/slua,yongkangchen/slua,yaukeywang/slua,thing-nacho/slua,dayongxie/slua,haolly/slua_source_note,Salada/slua,wang1986one/slua,zhaog/slua,haolly/slua_source_note,LacusCon/slua,Roland0511/slua,luzexi/slua-3rd-lib,chiuan/slua,yongkangchen/slua,soulgame/slua,thing-nacho/slua,angeldnd/slua,shrimpz/slua,haolly/slua_source_note,jiangzhhhh/slua,yaukeywang/slua,slb1988/slua,luzexi/slua-3rd-lib,LacusCon/slua,angeldnd/slua,yaukeywang/slua,wland/slua,lingkeyang/slua,slb1988/slua,zhaoluxyz/slua,lingkeyang/slua,moto2002/slua,DebugClub/slua,yongkangchen/slua,DebugClub/slua,moto2002/slua,zhaoluxyz/slua,dayongxie/slua,Roland0511/slua,zhukunqian/slua-1,Salada/slua,ChinaLongGanHu/slua,shenxiyou/slua,lyntel/slua,soulgame/slua,haolly/slua_source_note,dayongxie/slua,takaaptech/slua,dayongxie/slua,jiangzhhhh/slua,zhukunqian/slua-1,mr-kelly/slua,haolly/slua_source_note,angeldnd/slua,Salada/slua,DebugClub/slua,Roland0511/slua,angeldnd/slua,shenxiyou/slua,yaukeywang/slua-old,chiuan/slua,ChinaLongGanHu/slua,pangweiwei/slua,leonardave/slua,shrimpz/slua,jiangzhhhh/slua,littleboss/slua,zhaog/slua,soulgame/slua,Salada/slua,luzexi/slua-3rd,zhukunqian/slua-1,chiuan/slua,wland/slua,XingHong/slua,lingkeyang/slua,littleboss/slua,yongkangchen/slua,angeldnd/slua,chiuan/slua,Roland0511/slua