make save() function use quotes for --ulog-prefixto allow prefixes with spaces
(Jimmy Hedman)
diff --git a/extensions/libipt_ULOG.c b/extensions/libipt_ULOG.c
index 81ef2f5..41ee991 100644
--- a/extensions/libipt_ULOG.c
+++ b/extensions/libipt_ULOG.c
@@ -157,7 +157,7 @@
 	    = (const struct ipt_ulog_info *) target->data;
 
 	if (strcmp(loginfo->prefix, "") != 0)
-		printf("--ulog-prefix %s ", loginfo->prefix);
+		printf("--ulog-prefix \"%s\" ", loginfo->prefix);
 
 	if (loginfo->nl_group != ULOG_DEFAULT_NLGROUP) {
 		printf("--ulog-nlgroup ");