Fix #2 NPE when used with Log4J2-JPL

[taranion]

This little patch solved the Log4J bridge problem for me. LogManager.getLogger(name) returns NULL, if the logger did not exist before - Logger.getLogger(name) does create an eventually not yet existing logger or returns the existing one.

Thank you for creating this project - it helps me preventing the bloat from full blown webserver frameworks.

[robaho]

Thanks for the patch - I am glad the project is helping you.

I am not sure this change is correct though. I had added the utilities Logger for per instance logging, when the original code only used the System logger facilities - in order to change the filtering.

I am going to need to review the best way to fix this - I probably did something wrong. I normally only use the utility loggers, but I was trying to stay as close as possible to the original JDK httpserver code.

Are you certain your log4j is setup properly, and the System loggers are being redirected there?

[robaho]

Thank you for the PR. After reviewing the apis your code change was correct, but I modified the PR slightly to remove the unused imports, and avoid white space changes.