The fix for JDK-8170024 introduces a whitespace issue in the 10-dev/rt repo. I discovered this while merging changesets from 9-dev into 10-dev:

$ hg jcheck -r 58c94c872358
[jcheck @VERSION@ @DATE@]

> Changeset: 10450:58c94c872358
> Author: lbourges
> Date: 2017-04-18 17:00
>
> 8170024: PiscesRenderer.pr.emitAndClearAlphaRow cannot accept a pix_x_from parameter greater than clip.xmin
> Reviewed-by: flar

modules/javafx.graphics/src/main/java/com/sun/pisces/PiscesRenderer.java:348: Trailing whitespace