set the 'retry' bit to TRUE when the connection is about to be retried,

this allows the HTTP code to *not* return a failure just because no data
has been received from the server

lib/urldata.h

@@ -296,6 +296,8 @@ struct ConnectBits {
   bool tcpconnect;    /* the tcp stream (or simimlar) is connected, this
                          is set the first time on the first connect function
                          call */
+  bool retry;         /* this connection is about to get closed and then
+                         re-attempted at another connection. */
 };
 
 /*