Break cycle on close.

diff --git a/Tools/idle/Debugger.py b/Tools/idle/Debugger.py
index b085a1d6a32f6bac58c678e88bc13add8402d9db..267d39f4c2e51fd9634e9f9436017d3791eaaef2 100644 (file)
--- a/Tools/idle/Debugger.py
+++ b/Tools/idle/Debugger.py
@@ -26,6 +26,8 @@ class Debugger(bdb.Bdb):
         if self.interacting:
             self.top.bell()
             return
+        if self.stackviewer:
+            self.stackviewer.close(); self.stackviewer = None
         self.pyshell.close_debugger()
         self.top.destroy()