[glib/mcatanzaro/glib-2-56-rhel8] gnetworkmonitornm: Set a GError properly on an error handling path

[Michael Catanzaro <mcatanzaro src gnome org>]

commit c48c984d39afeae84b0cad515f08f83c711fd9c4
Author: Philip Withnall <withnall endlessm com>
Date:   Thu Sep 13 10:25:05 2018 +0100

    gnetworkmonitornm: Set a GError properly on an error handling path
    
    All the other initialisation failure paths set a GError, but this one
    didn’t. Set a GError to avoid breaking the invariant that returning
    FALSE should always have a GError set.
    
    Signed-off-by: Philip Withnall <withnall endlessm com>
    
    https://gitlab.gnome.org/GNOME/glib/issues/1523

 gio/gnetworkmonitornm.c | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/gio/gnetworkmonitornm.c b/gio/gnetworkmonitornm.c
index 20a86571f..5bc8c925a 100644
--- a/gio/gnetworkmonitornm.c
+++ b/gio/gnetworkmonitornm.c
@@ -309,6 +309,8 @@ g_network_monitor_nm_initable_init (GInitable     *initable,
 
   if (!name_owner)
     {
+      g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
+                   _("NetworkManager not running"));
       g_object_unref (proxy);
       return FALSE;
     }