[empathy] Validate parameters to fixup_url() and empathy_url_show()

[Davyd Madeley <davyd src gnome org>]

commit 6e60fdb3583e4072961a72148fe396885d037dcb
Author: Nicolò Chieffo <nicolo chieffo gmail com>
Date:   Fri Jul 17 17:58:08 2009 +0200

    Validate parameters to fixup_url() and empathy_url_show()
    
    Using g_return{_val,}_if_fail(). Extra validation added by Davyd Madeley.

 libempathy-gtk/empathy-ui-utils.c |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)
---
diff --git a/libempathy-gtk/empathy-ui-utils.c b/libempathy-gtk/empathy-ui-utils.c
index e91ac62..2218533 100644
--- a/libempathy-gtk/empathy-ui-utils.c
+++ b/libempathy-gtk/empathy-ui-utils.c
@@ -1341,6 +1341,8 @@ empathy_get_toplevel_window (GtkWidget *widget)
 static gchar *
 fixup_url (const gchar *url)
 {
+	g_return_val_if_fail (url != NULL, NULL);
+
 	if (g_str_has_prefix (url, "ghelp:") ||
 	    g_str_has_prefix (url, "mailto:";) ||
 	    strstr (url, ":/")) {
@@ -1361,6 +1363,9 @@ empathy_url_show (GtkWidget *parent,
 	gchar  *real_url;
 	GError *error = NULL;
 
+	g_return_if_fail (GTK_IS_WIDGET (parent));
+	g_return_if_fail (url != NULL);
+
 	real_url = fixup_url (url);
 	if (real_url) {
 		url = real_url;
@@ -1539,4 +1544,4 @@ empathy_receive_file_with_file_chooser (EmpathyFTHandler *handler)
 		G_CALLBACK (file_manager_receive_file_response_cb), handler);
 
 	gtk_widget_show (widget);
-}
\ No newline at end of file
+}