please review 7018392, update URLJarFile.java to use try-with-resources

[Alan Bateman]

Chris Hegarty wrote:
> Stuart,
>
> Thanks for doing this. The new code looks much cleaner. Please go 
> ahead and push this change.
>
> -Chris.
Looks okay to me too.  One minor comment is that it might be slightly 
easier to read if it were:

File tmpFile = File.createTempFile("jar_cache", null);
try {
    :
} finally {
    if (jarFile != null) tmpFile.delete();
}

-Alan.