fixed treenew touch scrolling

git-svn-id: http://svn.code.sf.net/p/processhacker/code/2.x/trunk@5643 21ef857c-d57f-4fe0-8362-d861dc6d29cd
actually fixed touch scrolling

git-svn-id: http://svn.code.sf.net/p/processhacker/code/2.x/trunk@5644 21ef857c-d57f-4fe0-8362-d861dc6d29cd