I was wondering what this little stick on the wing was. My best guesses are an antenna or some sort of air speed measuring tube?
You're correct. That is the pitot tube (head), placed there so that it is in undisturbed airflow. This location of pitot tube is found in othe aircraft too, like the Messerschmitt Bf 109 G-2 as shown below.
By Unknown - http://www.militaryimages.net/photopost/showphoto.php/photo/8212., Public Domain, https://commons.wikimedia.org/w/index.php?curid=2278317