[network-manager-vpnc] service: drop use of API that's gone

[Lubomir Rintel <lkundrak src gnome org>]

commit d3b59c6cf9a24a9cf5f018f9ce63ef95c8f56662
Author: Lubomir Rintel <lkundrak v3 sk>
Date:   Tue Oct 13 18:34:38 2015 +0200

    service: drop use of API that's gone
    
    The NM 1.2 snapshot just removed it and does the status transitions on
    _failure() and _disconnect().

 src/nm-vpnc-service.c |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)
---
diff --git a/src/nm-vpnc-service.c b/src/nm-vpnc-service.c
index e78ab9d..5a1c874 100644
--- a/src/nm-vpnc-service.c
+++ b/src/nm-vpnc-service.c
@@ -408,10 +408,9 @@ vpnc_watch_cb (GPid pid, gint status, gpointer user_data)
                nm_vpn_service_plugin_failure (NM_VPN_SERVICE_PLUGIN (plugin), 
NM_VPN_PLUGIN_FAILURE_CONNECT_FAILED);
                break;
        default:
+               nm_vpn_service_plugin_disconnect (NM_VPN_SERVICE_PLUGIN (plugin), NULL);
                break;
        }
-
-       nm_vpn_service_plugin_set_state (NM_VPN_SERVICE_PLUGIN (plugin), NM_VPN_SERVICE_STATE_STOPPED);
 }
 
 #define XAUTH_USERNAME_PROMPT "Enter username for "