* lib/webrick/utils.rb (WEBrick::Utils::TimeoutHandler): get keys

and fetch values from it to prevent @timeout_info's error
  "can't add a new key into hash during iteration".

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35258 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

lib/webrick/utils.rb

@@ -175,7 +175,9 @@ module WEBrick
         Thread.start{
           while true
             now = Time.now
-            @timeout_info.dup.each{|thread, ary|
+            @timeout_info.keys.each{|thread|
+              ary = @timeout_info[thread]
+              next unless ary
               ary.dup.each{|info|
                 time, exception = *info
                 interrupt(thread, info.object_id, exception) if time < now