set range as null after easy_perform

[young66]

curl/docs/examples/rtsp.c

Line 131 in 914f4ed

my_curl_easy_perform(curl);

after my_curl_easy_perform , should add this

  //set range as null , or will send range header within the after request include teardown.
  my_curl_easy_setopt(curl, CURLOPT_RANGE, NULL);

[bagder]

Thanks!