NetworkMenu: fix regression for VPN connections

Fix regression from e898e29910,
the code was moved from a method to a global function, but one
call site was not updated.

https://bugzilla.gnome.org/show_bug.cgi?id=710019

js/ui/status/network.js

@@ -1526,7 +1526,7 @@ const NMApplet = new Lang.Class({
             return (a instanceof NMClient.VPNConnection);
         });
         vpnConnections.forEach(Lang.bind(this, function(a) {
-            this._ensureActiveConnectionProps(a);
+            ensureActiveConnectionProps(a, this._settings);
         }));
         this._vpnSection.setActiveConnections(vpnConnections);