[brasero] Prevent potential warnings at runtime

[Philippe Rouquier <philippr src gnome org>]

commit 06c908181c0fdb8a5ac3b702875173cd88e42548
Author: Philippe Rouquier <bonfire-app wanadoo fr>
Date:   Mon Oct 26 10:48:42 2009 +0100

    Prevent potential warnings at runtime

 libbrasero-burn/brasero-progress.c |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)
---
diff --git a/libbrasero-burn/brasero-progress.c b/libbrasero-burn/brasero-progress.c
index 422d87a..1027fe3 100644
--- a/libbrasero-burn/brasero-progress.c
+++ b/libbrasero-burn/brasero-progress.c
@@ -132,6 +132,7 @@ brasero_burn_progress_create_info (BraseroBurnProgress *obj)
 	if (obj->priv->speed_table) {
 		gtk_widget_destroy (obj->priv->speed_table);
 		obj->priv->speed_table = NULL;
+		obj->priv->speed_label = NULL;
 		obj->priv->speed = NULL;
 	}
 
@@ -180,8 +181,12 @@ brasero_burn_progress_display_session_info (BraseroBurnProgress *obj,
 	gchar *markup;
 	gchar *text;
 
-	if (obj->priv->speed_table)
+	if (obj->priv->speed_table) {
 		gtk_widget_destroy (obj->priv->speed_table);
+		obj->priv->speed_table = NULL;
+		obj->priv->speed_label = NULL;
+		obj->priv->speed = NULL;
+	}
 
 	hrs = time / 3600;
 	time = ((int) time) % 3600;