CHUI-283: within LLFolderView::scrollToShowItem(), adjusted the calculation that scrolls to the selected item. My prior commit changed this calculation and adjusted it in this commit to preserve prior behavior.
CHUI-283: within LLFolderView::scrollToShowItem(), adjusted the calculation that scrolls to the selected item. My prior commit changed this calculation and adjusted it in this commit to preserve prior behavior.

gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm