corrected the Curl_is_connected() proto

lib/connect.h

@@ -1,10 +1,10 @@
 #ifndef __CONNECT_H
 #define __CONNECT_H
 /***************************************************************************
- *                                  _   _ ____  _     
- *  Project                     ___| | | |  _ \| |    
- *                             / __| | | | |_) | |    
- *                            | (__| |_| |  _ <| |___ 
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
  * Copyright (C) 1998 - 2004, Daniel Stenberg, <daniel@haxx.se>, et al.
@@ -12,7 +12,7 @@
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
  * are also available at http://curl.haxx.se/docs/copyright.html.
- * 
+ *
  * You may opt to use, copy, modify, merge, publish, distribute and/or sell
  * copies of the Software, and permit persons to whom the Software is
  * furnished to do so, under the terms of the COPYING file.
@@ -27,7 +27,7 @@ int Curl_nonblock(curl_socket_t sockfd,    /* operate on this */
                   int nonblock   /* TRUE or FALSE */);
 
 CURLcode Curl_is_connected(struct connectdata *conn,
-                           curl_socket_t sockfd,
+                           int sockindex,
                            bool *connected);
 
 CURLcode Curl_connecthost(struct connectdata *conn,