Review Request (1-line fix): 7032589 "FileHandler leaking file descriptor of the file lock"

[Mandy Chung]

  Fix for 7032589: FileHandler leaking file descriptor of the file lock

Webrev at:
    http://cr.openjdk.java.net/~mchung/jdk7/7032589/webrev.00/

When a log file is currently being used, tryLock() will fail and it has 
to close the file channel of the lock file

Thanks
Mandy