Added error checking for curl_global_init().

  pooh.sizeleft = strlen(data);

  /* In windows, this will init the winsock stuff */

  curl_global_init(CURL_GLOBAL_DEFAULT);

  res = curl_global_init(CURL_GLOBAL_DEFAULT);

  /* Check for errors */

  if(res != CURLE_OK) {

    fprintf(stderr, "curl_global_init() failed: %s\n",

            curl_easy_strerror(res));

    return 1;

  }

  /* get a curl handle */

  curl = curl_easy_init();