Fix handling of warn keyword in in Figure.show.

anntzer · anntzer · commit 72a6466cc9b6 · 2021-03-04T00:24:54.000+01:00
It was accidentally ignored since 154a616.
diff --git a/lib/matplotlib/figure.py b/lib/matplotlib/figure.py
@@ -2209,7 +2209,8 @@ def show(self, warn=True):
         try:
             self.canvas.manager.show()
         except NonGuiException as exc:
-            _api.warn_external(str(exc))
+            if warn:
+                _api.warn_external(str(exc))
 
     def get_axes(self):
         """
