missing serialVersionUID resulting in a problem reported in...

missing serialVersionUID resulting in a problem reported in http://d.hatena.ne.jp/miau/20101002/1286014365

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@35599 71c3de6d-444a-0410-be80-ed276b4c234a

remoting/src/main/java/hudson/remoting/Pipe.java

@@ -188,5 +188,7 @@ public final class Pipe implements Serializable {
                 }
             });
         }
+
+        private static final long serialVersionUID = 1L;
     }
 }