[glade] Fixed bug #660874 "glade-previewer fails to open UI files without top windows"

[Juan Pablo Ugarte <jpu src gnome org>]

commit d5162993bfe7e4cc8c3600a2625ce7242d55f1ab
Author: Juan Pablo Ugarte <juanpablougarte gmail com>
Date:   Tue Oct 4 16:53:33 2011 -0300

    Fixed bug #660874 "glade-previewer fails to open UI files without top windows"

 ChangeLog                 |    4 ++++
 gladeui/glade-previewer.c |    5 +++--
 2 files changed, 7 insertions(+), 2 deletions(-)
---
diff --git a/ChangeLog b/ChangeLog
index c8bd57f..398511a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,9 @@
 2011-10-04  Juan Pablo Ugarte <juanpablougarte gmail com>
 
+        * gladeui/glade-previewer.c: fixed bug #660874 
+          "glade-previewer fails to open UI files without top windows"
+          o Fixed runtime warnings in option parsing.
+
         * gladeui/glade-base-editor.c, gladeui/glade-project.c: fixed spelling errors
 
 2011-09-19  Juan Pablo Ugarte <juanpablougarte gmail com>
diff --git a/gladeui/glade-previewer.c b/gladeui/glade-previewer.c
index 58d9a9b..dee26f1 100644
--- a/gladeui/glade-previewer.c
+++ b/gladeui/glade-previewer.c
@@ -58,10 +58,10 @@ parse_arguments (int argc, char **argv, gchar ** toplevel_name,
   GError *error = NULL;
 
   GOptionEntry entries[] = {
-    {"filename", 'f', G_OPTION_FLAG_FILENAME | G_OPTION_FLAG_OPTIONAL_ARG,
+    {"filename", 'f', G_OPTION_ARG_NONE,
      G_OPTION_ARG_FILENAME, file_name, _("Name of the file to preview"),
      "FILENAME"},
-    {"toplevel", 't', G_OPTION_FLAG_OPTIONAL_ARG,
+    {"toplevel", 't', G_OPTION_ARG_NONE,
      G_OPTION_ARG_STRING, toplevel_name, _("Name of the toplevel to preview"),
      "TOPLEVELNAME"},
     {"listen", 'l', 0, G_OPTION_ARG_NONE, &listen, _("Listen standard input"),
@@ -130,6 +130,7 @@ get_toplevel (gchar * name, gchar * string, gsize length)
           if (GTK_IS_WIDGET (objects->data) && toplevel == NULL)
             {
               toplevel = GTK_WIDGET (objects->data);
+              g_object_ref (toplevel);
             }
           if (GTK_IS_WINDOW (objects->data))
             {