More robust.

48885027 · Florent Guillaume · 6887619c · 48885027
Commit 48885027 authored Jun 01, 2006 by Florent Guillaume
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lib/python/Products/ZCatalog/__init__.py lib/python/Products/ZCatalog/__init__.py +4 -1

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--- a/lib/python/Products/ZCatalog/__init__.py
+++ b/lib/python/Products/ZCatalog/__init__.py
@@ -23,7 +23,10 @@ try:
    from ZClasses import createZClassForBase
 finally:
    del warnings.filters[-1]
-    del __warningregistry__
+    try:
+        del __warningregistry__
+    except NameError:
+        pass
 createZClassForBase( ZCatalog.ZCatalog , globals()
                   , 'ZCatalogBase', 'ZCatalog' )