digest: make it clear the condition is always true

 *                            | (__| |_| |  _ <| |___

 *                             \___|\___/|_| \_\_____|

 *

 * Copyright (C) 1998 - 2009, Daniel Stenberg, <daniel@haxx.se>, et al.

 * Copyright (C) 1998 - 2010, Daniel Stenberg, <daniel@haxx.se>, et al.

 *

 * This software is licensed as described in the file COPYING, which

 * you should have received as part of this distribution. The terms

                             const char *header) /* rest of the *-authenticate:

                                                    header */

{

  bool more = TRUE;

  char *token = NULL;

  char *tmp = NULL;

  bool foundAuth = FALSE;

    /* clear off any former leftovers and init to defaults */

    Curl_digest_cleanup_one(d);

    while(more) {

    while(1) {

      char value[MAX_VALUE_LENGTH];

      char content[MAX_CONTENT_LENGTH];