 fix isstring
 fix isstring

LacusCon/slua,zhukunqian/slua-1,mr-kelly/slua,luzexi/slua-3rd-lib,chiuan/slua,Salada/slua,DebugClub/slua,LacusCon/slua,thing-nacho/slua,pangweiwei/slua,thing-nacho/slua,zhukunqian/slua-1,yaukeywang/slua,thing-nacho/slua,luzexi/slua-3rd-lib,haolly/slua_source_note,dayongxie/slua,Salada/slua,thing-nacho/slua,luzexi/slua-3rd,luzexi/slua-3rd,yaukeywang/slua,angeldnd/slua,luzexi/slua-3rd-lib,lingkeyang/slua,dayongxie/slua,chiuan/slua,Roland0511/slua,mr-kelly/slua,Roland0511/slua,mr-kelly/slua,mr-kelly/slua,yaukeywang/slua,Salada/slua,shrimpz/slua,soulgame/slua,DebugClub/slua,soulgame/slua,jiangzhhhh/slua,DebugClub/slua,luzexi/slua-3rd-lib,pangweiwei/slua,Salada/slua,Roland0511/slua,dayongxie/slua,yaukeywang/slua,chiuan/slua,chiuan/slua,shrimpz/slua,mr-kelly/slua,Roland0511/slua,soulgame/slua,chiuan/slua,DebugClub/slua,haolly/slua_source_note,lingkeyang/slua,pangweiwei/slua,chiuan/slua,Salada/slua,LacusCon/slua,zhukunqian/slua-1,lingkeyang/slua,dayongxie/slua,LacusCon/slua,soulgame/slua,luzexi/slua-3rd-lib,jiangzhhhh/slua,soulgame/slua,pangweiwei/slua,zhukunqian/slua-1,Roland0511/slua,jiangzhhhh/slua,lingkeyang/slua,jiangzhhhh/slua,angeldnd/slua,DebugClub/slua,dayongxie/slua,haolly/slua_source_note,luzexi/slua-3rd,haolly/slua_source_note,DebugClub/slua,jiangzhhhh/slua,angeldnd/slua,jiangzhhhh/slua,yaukeywang/slua,yaukeywang/slua,lingkeyang/slua,angeldnd/slua,LacusCon/slua,Salada/slua,lingkeyang/slua,angeldnd/slua,thing-nacho/slua,Roland0511/slua,soulgame/slua,luzexi/slua-3rd-lib,thing-nacho/slua,LacusCon/slua,luzexi/slua-3rd,luzexi/slua-3rd,zhukunqian/slua-1,pangweiwei/slua,luzexi/slua-3rd,haolly/slua_source_note,haolly/slua_source_note,angeldnd/slua,mr-kelly/slua