frameBasedKeyboardDidMoveBlock is never called with closing = YES in iOS7

[knutigro]

in iOS7 the UIKeyboardFrameEndUserInfoKey we get in - (void)inputKeyboardWillHide:(NSNotification *)notificationis CGRect: {{inf, inf}, {0, 0}}

The result is that !CGRectIsNull(keyboardEndFrameView) will fail and frameBasedKeyboardDidMoveBlock is never called with closingset to YES