[network-manager-fortisslvpn] service: use --pppd-plugin instead of --plugin

[Lubomir Rintel <lkundrak src gnome org>]

commit 209c38c5f1937023a7320c8580a08dfa3ca84352
Author: Lubomir Rintel <lkundrak v3 sk>
Date:   Tue Oct 13 20:07:49 2015 +0200

    service: use --pppd-plugin instead of --plugin
    
    That's what openfortivpn 1.1.0 prefers while it keeps compatibility with the
    old option.

 src/nm-fortisslvpn-service.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/nm-fortisslvpn-service.c b/src/nm-fortisslvpn-service.c
index b86c480..02e53f2 100644
--- a/src/nm-fortisslvpn-service.c
+++ b/src/nm-fortisslvpn-service.c
@@ -733,7 +733,7 @@ run_openfortivpn (NMFortisslvpnPlugin *plugin, NMSettingVpn *s_vpn, GError **err
                g_ptr_array_add (argv, (gpointer) g_strdup (value));
        }
 
-       g_ptr_array_add (argv, (gpointer) g_strdup ("--plugin"));
+       g_ptr_array_add (argv, (gpointer) g_strdup ("--pppd-plugin"));
        g_ptr_array_add (argv, (gpointer) g_strdup (NM_FORTISSLVPN_PPPD_PLUGIN));
 
        g_ptr_array_add (argv, NULL);