[gnome-control-center] sharing: Replace ifdefs with #pragma once

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 51e0b38774934c4289fbbf3e767e069b34afca5f
Author: Robert Ancell <robert ancell canonical com>
Date:   Thu Nov 21 20:40:47 2019 +1300

    sharing: Replace ifdefs with #pragma once

 panels/sharing/cc-gnome-remote-desktop.h | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)
---
diff --git a/panels/sharing/cc-gnome-remote-desktop.h b/panels/sharing/cc-gnome-remote-desktop.h
index 2a4819986..15565d3f4 100644
--- a/panels/sharing/cc-gnome-remote-desktop.h
+++ b/panels/sharing/cc-gnome-remote-desktop.h
@@ -17,12 +17,13 @@
  *
  */
 
-#ifndef CC_GNOME_REMOTE_DESKTOP_H
-#define CC_GNOME_REMOTE_DESKTOP_H
+#pragma once
 
 #include <gtk/gtk.h>
 #include <libsecret/secret.h>
 
+G_BEGIN_DECLS
+
 const SecretSchema * cc_grd_vnc_password_get_schema (void);
 #define CC_GRD_VNC_PASSWORD_SCHEMA cc_grd_vnc_password_get_schema ()
 
@@ -46,4 +47,4 @@ void cc_grd_on_vnc_password_entry_notify_text (GtkEntry   *entry,
                                                GParamSpec *pspec,
                                                gpointer    user_data);
 
-#endif /* CC_GNOME_REMOTE_DESKTOP_H */
+G_END_DECLS