open? should return true, not 1


git-svn-id: https://svn.apache.org/repos/asf/incubator/thrift/trunk@668965 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/lib/rb/lib/thrift/transport.rb b/lib/rb/lib/thrift/transport.rb
index cc45fac..57706ec 100644
--- a/lib/rb/lib/thrift/transport.rb
+++ b/lib/rb/lib/thrift/transport.rb
@@ -218,7 +218,7 @@
     end
 
     def open?
-      return 1
+      return true
     end
 
     def open