Revert "* lib/rinda/ring.rb: Linux's SO_REUSEPORT is not for multicast."

This reverts commit r52314.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52316 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,7 +1,3 @@
-Wed Oct 28 05:59:19 2015  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/rinda/ring.rb: Linux's SO_REUSEPORT is not for multicast.
-
 Tue Oct 27 23:14:14 2015  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* defs/id.def: enable anonymous IDs not to expose internal IDs for

lib/rinda/ring.rb

@@ -137,7 +137,7 @@ module Rinda
       @sockets << socket
 
       if addrinfo.ipv4_multicast? or addrinfo.ipv6_multicast? then
-        if Socket.const_defined?(:SO_REUSEPORT) && /linux/ !~ RUBY_PLATFORM then
+        if Socket.const_defined?(:SO_REUSEPORT) then
           socket.setsockopt(:SOCKET, :SO_REUSEPORT, true)
         else
           socket.setsockopt(:SOCKET, :SO_REUSEADDR, true)