RFR(XS) : 8166164 : compiler/compilercontrol/share/processors/LogProcessor.java does not close Scanner

[Igor Ignatyev]

http://cr.openjdk.java.net/~iignatyev/8166164/webrev.00/
> 16 lines changed: 2 ins; 0 del; 14 mod;

Hi all,

could you please review this small patch which fixes resource leak in compiler/compilercontrol tests? 
LogProcessor::getScanner creates a new Scanner, but there is no code which closes it. This leak leads to 'failed to clean up files after test’ error from jtreg.

the fix was tested by running :hotspot_compiler test group.

JBS: https://bugs.openjdk.java.net/browse/JDK-8166164
webrev: http://cr.openjdk.java.net/~iignatyev/8166164/webrev.00/

Thanks,
— Igor