Applied TkAgg memleak patch by Mike Droettboom, tracker 1745400

efiring · efiring · commit a2fc1a54fde0 · 2007-06-30T21:32:13.000Z
https://sourceforge.net/tracker/index.php?func=detail&aid=1745400&group_id=80706&atid=560722 svn path=/trunk/matplotlib/; revision=3432
diff --git a/lib/matplotlib/backends/backend_tkagg.py b/lib/matplotlib/backends/backend_tkagg.py
@@ -588,6 +588,10 @@ def __init__(self, canvas, window):
         #Tk.Frame.__init__(self, master=self.canvas._tkcanvas)
         NavigationToolbar2.__init__(self, canvas)
 
+    def destroy(self, *args):
+        del self.message
+        Tk.Frame.destroy(self, *args)
+        
     def set_message(self, s):
         self.message.set(s)
 
