Update sizeof test for fix on int 0

Author: ionite34

Lib/test/test_sys.py

@@ -1459,7 +1459,7 @@ def get_gen(): yield 1
         # listreverseiterator (list)
         check(reversed([]), size('nP'))
         # int
-        check(0, vsize(''))
+        check(0, vsize('') + self.longdigit)
         check(1, vsize('') + self.longdigit)
         check(-1, vsize('') + self.longdigit)
         PyLong_BASE = 2**sys.int_info.bits_per_digit