[network-manager-openvpn] helper: fix use-after-free for IPv6 routes

[Lubomir Rintel <lkundrak src gnome org>]

commit c32ff77c9ece20f15addacbcd30f6ce866a2e51a
Author: Lubomir Rintel <lkundrak v3 sk>
Date:   Fri Nov 13 14:39:39 2015 +0100

    helper: fix use-after-free for IPv6 routes

 src/nm-openvpn-service-openvpn-helper.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/nm-openvpn-service-openvpn-helper.c b/src/nm-openvpn-service-openvpn-helper.c
index cad8cd0..00f71a8 100644
--- a/src/nm-openvpn-service-openvpn-helper.c
+++ b/src/nm-openvpn-service-openvpn-helper.c
@@ -310,12 +310,12 @@ get_ip6_routes (void)
                        g_strfreev (dest_prefix);
                        continue;
                }
-               g_strfreev (dest_prefix);
 
                snprintf (buf, BUFLEN, "route_ipv6_gateway_%d", i);
                tmp = getenv (buf);
 
                route = nm_ip_route_new (AF_INET6, dest_prefix[0], prefix, tmp, -1, &error);
+               g_strfreev (dest_prefix);
                if (!route) {
                        g_warning ("Ignoring a route: %s", error->message);
                        g_error_free (error);