Suppress warnings

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39929 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

lib/rinda/ring.rb

@@ -48,7 +48,7 @@ module Rinda
       ##
       # Set to false to shutdown future requests using this Renewer
 
-      attr_accessor :renew
+      attr_writer :renew
 
       def initialize # :nodoc:
         @renew = true

test/rinda/test_rinda.rb

@@ -50,7 +50,7 @@ class MockClock
   end
 
   def rewind
-    now ,= @ts.take([nil, :now])
+    @ts.take([nil, :now])
     @ts.write([@inf, :now])
     @ts.take([nil, :now])
     @now = 2
@@ -76,7 +76,7 @@ module Time
   module_function :at
 
   def now
-    @m ? @m.now : 2
+    defined?(@m) && @m ? @m.now : 2
   end
   module_function :now