Crash with zero divide if not ready to calculate item size
Crash with zero divide if not ready to calculate item size

Drahoslav7/gxui,google/gxui,leelib/gxui,pombredanne/gxui,UIKit0/gxui,henrylee2cn/gxui,insionng/gxui,crr0004/gxui,abadojack/gxui,ylong/gxui,Anaminus/gxui,MeGaPk/gxui,CodyGuo/gxui,xinhuang327/gxui,henrikhodne/gxui,treejames/gxui,jmptrader/gxui,cainiaocome/gxui,mzgnr/gxui,rnubel/gxui