Added FSCTL_PIPE_LISTEN support.

diff --git a/server/protocol.def b/server/protocol.def
index 422aa00..9e93f53 100644
--- a/server/protocol.def
+++ b/server/protocol.def
@@ -1712,7 +1712,7 @@
 /* Connect to a named pipe */
 @REQ(connect_named_pipe)
     obj_handle_t   handle;
-    void*          overlapped;
+    obj_handle_t   event;
     void*          func;
 @END