better detection for when add_buffer() returns failure, and return when that

             This limit is no magic limit but only set to prevent really huge

             POSTs to get the data duplicated with malloc() and family. */

          add_buffer(req_buffer, "\r\n", 2); /* end of headers! */

          result == add_buffer(req_buffer, "\r\n", 2); /* end of headers! */

          if(result)

            return result;

          if(!conn->bits.upload_chunky)

          if(!conn->bits.upload_chunky) {

            /* We're not sending it 'chunked', append it to the request

               already now to reduce the number if send() calls */

            add_buffer(req_buffer, data->set.postfields, (size_t)postsize);

            result = add_buffer(req_buffer, data->set.postfields,

                                (size_t)postsize);

          }

          else {

            /* Append the POST data chunky-style */

            add_bufferf(req_buffer, "%x\r\n", (int)postsize);

            add_buffer(req_buffer, data->set.postfields, (size_t)postsize);

            add_buffer(req_buffer, "\r\n0\r\n\r\n", 7); /* end of a chunked

            result = add_bufferf(req_buffer, "%x\r\n", (int)postsize);

            if(CURLE_OK == result)

              result = add_buffer(req_buffer, data->set.postfields,

                                  (size_t)postsize);

            if(CURLE_OK == result)

              result = add_buffer(req_buffer,

                                  "\r\n0\r\n\r\n", 7); /* end of a chunked

                                                          transfer stream */

          }

          if(result)

            return result;

        }

        else {

          /* A huge POST coming up, do data separate from the request */