[gthumb] object_ready_with_error: keep a reference of the object

[Paolo Bacchilega <paobac src gnome org>]

commit 0a33c3e28d09bc7d385a7612974e1626cd4a994c
Author: Paolo Bacchilega <paobac src gnome org>
Date:   Fri Dec 6 12:53:33 2019 +0100

    object_ready_with_error: keep a reference of the object

 gthumb/glib-utils.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/gthumb/glib-utils.c b/gthumb/glib-utils.c
index b15da74d..573a4014 100644
--- a/gthumb/glib-utils.c
+++ b/gthumb/glib-utils.c
@@ -200,7 +200,8 @@ exec_object_ready_func (gpointer user_data)
        ObjectReadyData *data = user_data;
 
        g_source_remove (data->id);
-       data->ready_func (G_OBJECT (data->object), data->error, data->user_data);
+       data->ready_func (data->object, data->error, data->user_data);
+       _g_object_unref (data->object);
        g_free (data);
 
        return FALSE;
@@ -217,7 +218,7 @@ object_ready_with_error (gpointer       object,
 
        data = g_new0 (ObjectReadyData, 1);
 
-       data->object = object;
+       data->object = _g_object_ref (object);
        data->ready_func = ready_func;
        data->user_data = user_data;
        data->error = error;