Odd Warning when exiting OpenGL sketches on OSX

[hx2A]

When exiting an OpenGL sketch on OSX, and odd warning appears. Most likely there is some kind of OSX specific shutdown code that is not being run in the exitActual() method.

Steps to reproduce:

1. Run this Sketch:

def settings():
    py5.size(250, 250, py5.P2D)

def draw():
    py5.rect(py5.mouse_x, py5.mouse_y, 10, 10)

2. Exit the Sketch
3. This message will appear:

2021-03-23 11:27:03.765 python[824:14388] NewtNSView::dealloc: softLock still hold @ dealloc!

Need to find out what object is generating that and shut it down properly.