Fix a deselection in placeholder for multiple selection
Fix a deselection in placeholder for multiple selection

f33chobits/FSCalendar,WenchaoD/FSCalendar,WenchaoIOS/FSCalendar,f33chobits/FSCalendar,mohsinalimat/FSCalendar,mohsinalimat/FSCalendar,mohsinalimat/FSCalendar,mohsinalimat/FSCalendar,WenchaoD/FSCalendar,WenchaoIOS/FSCalendar