added script to obviate nasty memory leak in Index_getitem

test/test_leak.py

@@ -0,0 +1,17 @@
+import unittest
+
+import utils
+
+class TestLeak(utils.RepoTestCase):
+    def test_index_iter(self):
+        index = self.repo.index
+        while True:
+            list(index)
+
+    def test_index_getitem(self):
+        index = self.repo.index
+        while True:
+            index[0]
+
+if __name__ == '__main__':
+    unittest.main()