Thrift: OCaml TSocket fix

Summary: Now closes input channel on close. Also, transport exceptions are cleaner.
Reviewed by: mcslee
Test plan: Yes
Revert plan: yes


git-svn-id: https://svn.apache.org/repos/asf/incubator/thrift/trunk@665198 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/lib/ocaml/src/TServerSocket.ml b/lib/ocaml/src/TServerSocket.ml
index ac98b08..9e79706 100644
--- a/lib/ocaml/src/TServerSocket.ml
+++ b/lib/ocaml/src/TServerSocket.ml
@@ -11,11 +11,12 @@
       Unix.listen s 256
   method close =
     match sock with
-        Some s -> Unix.shutdown s Unix.SHUTDOWN_ALL; Unix.close s; sock <- None
+        Some s -> Unix.shutdown s Unix.SHUTDOWN_ALL; Unix.close s; 
+          sock <- None
       | _ -> ()
   method acceptImpl =
     match sock with
         Some s -> let (fd,_) = Unix.accept s in
                     new TChannelTransport.t (Unix.in_channel_of_descr fd,Unix.out_channel_of_descr fd)
-      | _ -> Transport.raise_TTransportExn "ServerSocket: Not listening but tried to accept" Transport.NOT_OPEN
+      | _ -> raise (Transport.E (Transport.NOT_OPEN,"TServerSocket: Not listening but tried to accept"))
 end