Issue #3859: Fixed test_sys.Sizeof failure on win64.

Reviewed by Benjamin Peterson.
diff --git a/Lib/test/test_sys.py b/Lib/test/test_sys.py
index 2b9a5d5..b5b5077 100644
--- a/Lib/test/test_sys.py
+++ b/Lib/test/test_sys.py
@@ -580,7 +580,7 @@
         check(reversed(''), size(h + 'PP'))
         # range
         check(range(1), size(h + '3P'))
-        check(range(66000), size(h + '3l'))
+        check(range(66000), size(h + '3P'))
         # set
         # frozenset
         PySet_MINSIZE = 8