Fix "array element cannot be nil" Analyzer warning
Fix "array element cannot be nil" Analyzer warning

dvan001/iOS-NBUImagePicker,dvan001/iOS-NBUImagePicker,jonesgithub/iOS-NBUImagePicker,CyberAgent/iOS-NBUImagePicker,jonesgithub/iOS-NBUImagePicker,jonesgithub/iOS-NBUImagePicker,CyberAgent/iOS-NBUImagePicker,dvan001/iOS-NBUImagePicker,dvan001/iOS-NBUImagePicker,jonesgithub/iOS-NBUImagePicker