JDK-9 RFR for 8031525: Logger created in test/tools/jar/UpdateManifest.java might get gc'ed too early.

[Daniel Fuchs]

Hi,

Please find below a trivial fix for
8031525: Logger created in test/tools/jar/UpdateManifest.java might
         get gc'ed too early.
https://bugs.openjdk.java.net/browse/JDK-8031525

Hopefully that's the last of its kind - (see 
https://bugs.openjdk.java.net/browse/JDK-8029595).

webrev:

http://cr.openjdk.java.net/~dfuchs/webrev_8031525-jdk9/webrev.00/

best regards,

-- daniel