rb: Make a few of the NonblockingServer specs pass under jruby


git-svn-id: https://svn.apache.org/repos/asf/incubator/thrift/trunk@669036 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/lib/rb/spec/ThriftSpec.thrift b/lib/rb/spec/ThriftSpec.thrift
index 1012e51..4309829 100644
--- a/lib/rb/spec/ThriftSpec.thrift
+++ b/lib/rb/spec/ThriftSpec.thrift
@@ -20,7 +20,7 @@
 service NonblockingService {
   Hello greeting(1:bool english)
   bool block()
-  async void unblock()
+  async void unblock(1:i32 n)
   async void shutdown()
   void sleep(1:double seconds)
 }