[OpenJDK 2D-Dev] Proposed fix for JDK-807558 [JDK9]

[Mario Torre]

Hello all,

This patch should fix the issue mentioned in the bug report:

http://cr.openjdk.java.net/~neugens/JDK-8075584/webrev/

I believe this is all that needs to be done here, but I would like
another pair of eyes nevertheless :)

Cheers,
Mario