[OpenJDK 2D-Dev] RFR 8144630: Use PrivilegedAction to create Thread in Marlin RendererStats

[Laurent Bourgès]

https://bugs.openjdk.java.net/browse/JDK-8144630

Please review this simple webrev that fixes the Thread creation in
RendererStats:
http://cr.openjdk.java.net/~lbourges/marlin/marlin-8144630.0/

Regards,
Laurent Bourgès