tst-mallinfo2.c: Use correct multiple for total variable

Since test uses 160 multiple for malloc size, we should also use 160 multiple
for total variable instead of 16, then comparison is meaningful. So fix it.

Also change the ">" to ">=" so that the test is technically valid.

Reviewed-by: DJ Delorie <dj@redhat.com>

malloc/tst-mallinfo2.c

@@ -68,14 +68,14 @@ do_test (void)
   for (i = 1; i < 20; ++i)
     {
       ptr = malloc (160 * i);
-      total += 16 * i;
+      total += 160 * i;
     }
 
   mi2 = mallinfo2 ();
   print_mi ("after", &mi2);
 
   /* Check at least something changed.  */
-  TEST_VERIFY (mi2.uordblks > mi1.uordblks + total);
+  TEST_VERIFY (mi2.uordblks >= mi1.uordblks + total);
 
   return 0;
 }