Song Ma found a memory leak in the if2ip code if you pass in an interface

                                  Changelog

Daniel S (12 April 2007)

- Song Ma found a memory leak in the if2ip code if you pass in an interface

  name longer than the name field of the ifreq struct (typically 6 bytes), as

  then it wouldn't close the used dummy socket. Bug #1698974

  (http://curl.haxx.se/bug/view.cgi?id=1698974)

Version 7.16.2 (11 April 2007)

Yang Tse (10 April 2007)

    struct ifreq req;

    size_t len = strlen(interface);

    memset(&req, 0, sizeof(req));

    if(len >= sizeof(req.ifr_name))

    if(len >= sizeof(req.ifr_name)) {

      sclose(dummy);

      return NULL; /* this can't be a fine interface name */

    }

    memcpy(req.ifr_name, interface, len+1);

    req.ifr_addr.sa_family = AF_INET;

#ifdef IOCTL_3_ARGS