SeleniumHQ/selenium — pull request #59 by Zitrax (2013-04-29 10:17:49+00:00)
Title: Fix for WindowsUtils.kill()

As internally kill() try to kill the process tree the pattern
might also match the child processes and thus risking trying
to kill a process that was already killed. Calling killPID()
on a dead process throws an exception, so catch that and ignore.

( CLA Signed )