[glade] Turn error into warning

[Juan Pablo Ugarte <jpu src gnome org>]

commit e59e5b2b319607e801bbf0ae4c403f77dc0f8153
Author: Alberto Fanjul <albertofanjul gmail com>
Date:   Tue Jul 24 23:47:35 2018 +0200

    Turn error into warning

 gladeui/glade-widget.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gladeui/glade-widget.c b/gladeui/glade-widget.c
index 960e3fd2..b9149d24 100644
--- a/gladeui/glade-widget.c
+++ b/gladeui/glade-widget.c
@@ -4085,7 +4085,7 @@ glade_widget_read (GladeProject *project,
                }
 
              if (!(widget = glade_widget_get_from_gobject (child_object)))
-               g_error ("Unable to get GladeWidget "
+               g_warning ("Unable to get GladeWidget "
                         "for internal child %s\n", internal);
 
              /* Apply internal widget name from here */