Fix test_canvas_reinit.

QuLogic · QuLogic · commit 1a7cc4c83dcd · 2020-03-31T01:41:07.000-04:00
The figure is no longer set stale because `resize` is no longer called.
There's no reason the figure should be stale until it's ready to be
drawn, but we don't really need a whole main loop for this test.
diff --git a/lib/matplotlib/tests/test_backend_qt.py b/lib/matplotlib/tests/test_backend_qt.py
@@ -271,4 +271,5 @@ def crashing_callback(fig, stale):
     fig.stale_callback = crashing_callback
     # this should not raise
     canvas = FigureCanvasQTAgg(fig)
+    fig.stale = True
     assert called
