[gnome-control-center/gnome-3-20] power: Fix hiding wi-fi, mobile broadband toggles

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 601164dec82300e1d0ef7ef9b82eba0ec05bd5d3
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Fri Sep 9 21:38:46 2016 -0500

    power: Fix hiding wi-fi, mobile broadband toggles
    
    We check with NetworkManager whether a wireless device exists to decide
    whether or not to display these toggles. NetworkManager says no, we hide
    the toggles, then we call gtk_widget_show_all() and undo our work. Sad!
    Actually pressing the toggles triggers the check again, and causes both
    listbox rows to shockingly disappear.
    
    This fix is not needed on the master branch because, since the port to
    libnm 1.2, the check is now scheduled on the main loop, to run after
    this function completes, inadvertantly fixing this bug.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=771148

 panels/power/cc-power-panel.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)
---
diff --git a/panels/power/cc-power-panel.c b/panels/power/cc-power-panel.c
index e631e0b..7c0140c 100644
--- a/panels/power/cc-power-panel.c
+++ b/panels/power/cc-power-panel.c
@@ -1842,7 +1842,6 @@ add_power_saving_section (CcPowerPanel *self)
                     G_CALLBACK (nm_device_changed), self);
   g_signal_connect (priv->nm_client, "device-removed",
                     G_CALLBACK (nm_device_changed), self);
-  nm_device_changed (priv->nm_client, NULL, self);
 
   g_signal_connect (G_OBJECT (priv->wifi_switch), "notify::active",
                     G_CALLBACK (wifi_switch_changed), self);
@@ -1899,6 +1898,10 @@ add_power_saving_section (CcPowerPanel *self)
 #endif
 
   gtk_widget_show_all (widget);
+
+#ifdef HAVE_NETWORK_MANAGER
+  nm_device_changed (priv->nm_client, NULL, self);
+#endif
 }
 
 static void