Fix a bug that when keyboard is presented and scrollView's contentInset/contentOffset is changed, when keyboard is dismissed, the incorrect originalInset/Offset is set.
Fix a bug that when keyboard is presented and scrollView's contentInset/contentOffset is changed, when keyboard is dismissed, the incorrect originalInset/Offset is set.

honghaoz/ZHAutoScrollView,honghaoz/AutoKeyboardScrollView,honghaoz/ZHAutoScrollView,honghaoz/AutoKeyboardScrollView,honghaoz/ZHAutoScrollView