[gnome-control-center/wip/hadess/fix-nm-1.22-build: 1/2] network: Fix build with libnm 1.22

[Bastien Nocera <hadess src gnome org>]

commit 69cdce8b49257f90e6473762c8b314bf42a0e3fb
Author: Bastien Nocera <hadess hadess net>
Date:   Wed Sep 16 14:28:44 2020 +0200

    network: Fix build with libnm 1.22
    
    /usr/bin/ld: panels/network/libnetwork.a(net-device-wifi.c.o): in function 
`nm_client_on_permission_change':
    gnome-control-center/panels/network/net-device-wifi.c:1183: undefined reference to 
`nm_client_get_permissions_state'
    collect2: error: ld returned 1 exit status
    
    Closes: #1120

 panels/network/net-device-wifi.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)
---
diff --git a/panels/network/net-device-wifi.c b/panels/network/net-device-wifi.c
index cb86e5b0a..2d3677805 100644
--- a/panels/network/net-device-wifi.c
+++ b/panels/network/net-device-wifi.c
@@ -1179,8 +1179,12 @@ void
 nm_client_on_permission_change (NetDeviceWifi *self) {
         NMClientPermissionResult perm;
         NMDeviceWifiCapabilities caps;
+        NMTernary permissions_state = NM_TERNARY_TRUE;
 
-        if (nm_client_get_permissions_state (self->client) != NM_TERNARY_TRUE) {
+        if (g_object_class_find_property (G_OBJECT_GET_CLASS (self->client), "permissions-state") != NULL)
+                g_object_get (G_OBJECT (self->client), "permissions-state", &permissions_state, NULL);
+
+        if (permissions_state != NM_TERNARY_TRUE) {
                 /* permissions aren't ready yet */
                 return;
         }
@@ -1227,8 +1231,9 @@ net_device_wifi_new (CcPanel *panel, NMClient *client, NMDevice *device)
                                  G_CALLBACK (ap_activated), self, G_CONNECT_SWAPPED);
         g_signal_connect_object (list, "configure",
                                  G_CALLBACK (show_details_for_row), self, G_CONNECT_SWAPPED);
-        g_signal_connect_object (client, "notify",
-                                 G_CALLBACK(nm_client_on_permission_change), self, G_CONNECT_SWAPPED);
+        if (g_object_class_find_property (G_OBJECT_GET_CLASS (client), "permissions-state") != NULL)
+                g_signal_connect_object (client, "notify::permissions-state",
+                                         G_CALLBACK(nm_client_on_permission_change), self, 
G_CONNECT_SWAPPED);
 
         nm_client_on_permission_change(self);