From 071de5ccfbb743f1b68da84f3264eddc2195e8d5 Mon Sep 17 00:00:00 2001
From: "Richard W.M. Jones" <rjones@redhat.com>
Date: Mon, 28 Jan 2013 15:04:11 +0000
Subject: [PATCH] daemon: Allow free_strings (NULL) and free_stringslen (NULL,
 ..).

Equivalent to free (NULL).
---
 daemon/guestfsd.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/daemon/guestfsd.c b/daemon/guestfsd.c
index 9c1c02843..0dcdaaa0d 100644
--- a/daemon/guestfsd.c
+++ b/daemon/guestfsd.c
@@ -517,6 +517,9 @@ free_strings (char **argv)
 {
   size_t argc;
 
+  if (!argv)
+    return;
+
   for (argc = 0; argv[argc] != NULL; ++argc)
     free (argv[argc]);
   free (argv);
@@ -527,6 +530,9 @@ free_stringslen (char **argv, size_t len)
 {
   size_t i;
 
+  if (!argv)
+    return;
+
   for (i = 0; i < len; ++i)
     free (argv[i]);
   free (argv);