Issue #9696: Fix exception incorrectly raised by xdrlib.Packer.pack_int when trying to pack a negative (in-range) integer.
diff --git a/Lib/test/test_xdrlib.py b/Lib/test/test_xdrlib.py
index 073448c..6004c9f 100644
--- a/Lib/test/test_xdrlib.py
+++ b/Lib/test/test_xdrlib.py
@@ -12,6 +12,7 @@
         a = [b'what', b'is', b'hapnin', b'doctor']
 
         p.pack_int(42)
+        p.pack_int(-17)
         p.pack_uint(9)
         p.pack_bool(True)
         p.pack_bool(False)
@@ -29,6 +30,7 @@
         self.assertEqual(up.get_position(), 0)
 
         self.assertEqual(up.unpack_int(), 42)
+        self.assertEqual(up.unpack_int(), -17)
         self.assertEqual(up.unpack_uint(), 9)
         self.assertTrue(up.unpack_bool() is True)