fix modalview getting closed when dismissing alert [iOS 5]
fix modalview getting closed when dismissing alert [iOS 5]

Suninus/SIAlertView,peatiscoding/SIAlertView,hejunbinlan/SIAlertView,jabarier/SIAlertView,NikolayShubenkovProgSchool/SIAlertView,dxt/SIAlertView,q231950/SIAlertView,Sumi-Interactive/SIAlertView,munchios1/SIAlertView,zfpan1981/SIAlertView,bfeher/SIAlertView,Gwion101/SIAlertView,shenyuan000/SIAlertView,mrdaios/SIAlertView,reekris/SIAlertView,theill/SIAlertView,GhostClock/SIAlertView,siburb/SIAlertView,angu/SIAlertView,OnTheWay1988/SIAlertView,Appsido/SIAlertView,ChatSecure/SIAlertView,kennygunie/SIAlertView,cnbin/SIAlertView,tattn/SIAlertView,iFallen/SIAlertView,AlexanderMazaletskiy/SIAlertView,afehners/SIAlertView