Fix VirtualFlow.scrollToTop(int) doesn't scroll to the top of the last element but to the bottom of the last element.
------------- Commit messages: - JDK-8276167: fixing VirtualFlow.scrollToTop(int) Changes: https://git.openjdk.java.net/jfx/pull/656/files Webrev: https://webrevs.openjdk.java.net/?repo=jfx&pr=656&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8276167 Stats: 3 lines in 3 files changed: 1 ins; 0 del; 2 mod Patch: https://git.openjdk.java.net/jfx/pull/656.diff Fetch: git fetch https://git.openjdk.java.net/jfx pull/656/head:pull/656 PR: https://git.openjdk.java.net/jfx/pull/656
