get rid of the warning when analysing it
get rid of the warning when analysing it

PNPieChart.m:137:33: warning: Passed-by-value struct argument contains
uninitialized data (e.g., via the field chain: 'origin.x')

wdxgtsh/PNChart,farshidce/PNChart,sdonly/PNChart,Kevin775263419/PNChart,andaluz/PNChart,kevinzhow/PNChart,caldofran/PNChart,alexfeng/PNChart,springmsiosteam/PNChart,Insfgg99x/PNChart,takaaptech/PNChart,wsl-victor/PNChart,honglei619/PNChart,JeeLiu/PNChart,NghiaTranUIT/PNChart,Farteen/PNChart,WWLJ/PNChart,springmsiosteam/PNChart,cnbin/PNChart,shenhzou654321/PNChart,koknine/PNChart,emodeqidao/PNChart,yuanhoujun/PNChart,GuoZhiQiang/PNChart,SampleLiao/PNChart,jianwoo/PNChart,scottdinggo/PNChart,bangslosan/PNChart,misparking/PNChart,hwsyy/PNChart,nmxugang/PNChart,JackLeeMing/PNChart,onevcat/PNChart,sunfei/PNChart,Bogon/PNChart,280482431/PNChart,klauslanza/PNChart,chernyog/PNChart,FlashHand/PNChart,IordacheClaudiu/PNChart,yaoxiaoyong/PNChart,hanangellove/PNChart,yimouleng/PNChart,cheneyxx/PNChart,Jupengpeng/PNChart,DuetHealth/PNChart,yirenjun/PNChart,zwcshy/PNChart,adoxner/PNChart,hao-hua/PNChart,lawrencehjf/PNChart