Correct output of git-count-objects.

The non-verbose output was not changed in fdb2a2a (compat: introduce
on_disk_bytes(), 2008-08-18) which caused git-count-objects to claim 512
times too much space used for loose objects.

Signed-off-by: Junio C Hamano <gitster@pobox.com>

builtin-count-objects.c

@@ -126,6 +126,6 @@ int cmd_count_objects(int argc, const char **argv, const char *prefix)
 	}
 	else
 		printf("%lu objects, %lu kilobytes\n",
-		       loose, loose_size / 2);
+		       loose, loose_size / 1024);
 	return 0;
 }