Fixing a silly mistake - mixed up `lineX2` and `lineY` parameters in `PrismTextLayout`.
------------- Commit messages: - tests - fix Changes: https://git.openjdk.org/jfx/pull/1976/files Webrev: https://webrevs.openjdk.org/?repo=jfx&pr=1976&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8371981 Stats: 157 lines in 4 files changed: 152 ins; 5 del; 0 mod Patch: https://git.openjdk.org/jfx/pull/1976.diff Fetch: git fetch https://git.openjdk.org/jfx.git pull/1976/head:pull/1976 PR: https://git.openjdk.org/jfx/pull/1976
