fix typo (#16720)

asvetlov · asvetlov · commit 2552bc06019a · 2012-12-24T21:47:24.000+02:00
diff --git a/Lib/os.py b/Lib/os.py
@@ -275,7 +275,7 @@ def removedirs(name):
     while head and tail:
         try:
             rmdir(head)
-        except OSrror:
+        except OSError:
             break
         head, tail = path.split(head)
 
