Fix bug when open new window without params.
Merge branch 'master' of github.com:3dsinteractive/cocosnx

# By Methas Tariya
# Via Methas Tariya
* 'master' of github.com:3dsinteractive/cocosnx:
  Added hideScrollBar and scrollBarStyle attributes to XML and iOS implementation. However, iOS has a rendering problem with UIScrollViewIndicatorStyle Black and White. So, this attributes are implemented but not usable right now