Don't warn about failure to apply changes on inactive device

If the NMDevice is not active (i.e. if we are editing a connection that
is not active) then don't warn when failing to reapply changes to the
device. That's expected and not something we should warn about.

We could perhaps not even try, but the device could become inactive
between the time of our check and this error, so better ignore the error
regardless.

panels/network/connection-editor/net-connection-editor.c

@@ -213,6 +213,7 @@ device_reapply_cb (GObject      *source_object,
         gboolean success = TRUE;
 
         if (!nm_device_reapply_finish (NM_DEVICE (source_object), res, &error)) {
+                if (!g_error_matches (error, NM_DEVICE_ERROR, NM_DEVICE_ERROR_NOT_ACTIVE))
                         g_warning ("Failed to reapply changes on device: %s", error->message);
                 success = FALSE;
         }