* lib/webrick/utils.rb (WEBrick::Utils::TimeoutHandler#initialize):
use WEBrick::Utils::TimeoutHandler::Thread, which is ignored by
LeakChecker#find_threads, instead of ::Thread to get rid of
thread leak checker. since this TimeoutHandler is resident
during tests because of Singleton, it waits for the next timeout
if it has any schedules. in the case of nested timeouts, inner
timeout does not cancel outer timeouts and then those schedules
still remain.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53201 b2dd03c8-39d4-4d8f-98ff-823fe69b080e