fix save() functions of libip[6]t_length (Gerry Skerbitz)
diff --git a/extensions/libipt_length.c b/extensions/libipt_length.c
index a61ce67..8ac98b6 100644
--- a/extensions/libipt_length.c
+++ b/extensions/libipt_length.c
@@ -112,7 +112,7 @@
 print_length(struct ipt_length_info *info)
 {
 	if (info->invert)
-		fputc('!', stdout);
+		printf("! ");
 	
 	if (info->max == info->min)
 		printf("%u ", info->min);