2003-12-09 Michael Koch <konqueror@gmx.de>

* java/net/DatagramSocket.java
	(close): Directly return if socket is closed.
	* java/net/ServerSocket.java
	(close): Directly return if socket is closed.
	* java/net/Socket.java
	(close): Directly return if socket is closed.

From-SVN: r74470

libjava/java/net/Socket.java

@@ -1003,7 +1003,7 @@ public class Socket
   public synchronized void close ()  throws IOException
   {
     if (isClosed())
-      throw new SocketException("socket is closed");
+      return;
     
     getImpl().close();
     impl = null;