Add some checks to prevent crashes.

gtk/incall_view.c

@@ -557,6 +557,7 @@ void linphone_gtk_in_call_view_terminate(LinphoneCall *call, const char *error_m
 	guint taskid=GPOINTER_TO_INT(g_object_get_data(G_OBJECT(callview),"taskid"));
 	gboolean in_conf=linphone_call_params_local_conference_mode(linphone_call_get_current_params(call));	
 
+	if ((callview==NULL) || (status==NULL)) return;
 	if (error_msg==NULL)
 		gtk_label_set_markup(GTK_LABEL(status),_("<b>Call ended.</b>"));
 	else{

gtk/main.c

@@ -354,8 +354,10 @@ static void entry_unmapped(GtkWidget *entry){
 }
 
 GtkWidget *linphone_gtk_get_widget(GtkWidget *window, const char *name){
-	GtkBuilder *builder=(GtkBuilder*)g_object_get_data(G_OBJECT(window),"builder");
+	GtkBuilder *builder;
 	GObject *w;
+	if (window==NULL) return NULL;
+	builder=(GtkBuilder*)g_object_get_data(G_OBJECT(window),"builder");
 	if (builder==NULL){
 		g_error("Fail to retrieve builder from window !");
 		return NULL;