RFR(XS): 8133830: [solaris] Fix for potential memory leak in TimeZone_md.c, function findJavaTZ_md()

[Langer, Christoph]

Hi all,

as per the discussion in thread "Fix for small leak in TimeZone_md.c" in 
jdk9-dev, I would like to get the following tiny change reviewed:

Bug: https://bugs.openjdk.java.net/browse/JDK-8133830
Webrev: http://cr.openjdk.java.net/~asiebenborn/christoph/webrev/

I also need a sponsor since I can't commit yet.

Thanks
Christoph