Merge pull request 'master' (#83) from YanTheKaller/libublsettingsui-gtk3:master into master

Reviewed-on: #83

source/libublsettingsui-gtk3.c

@@ -138,7 +138,10 @@ void on_about(GtkWidget *self, char *version_application){
 
 int yon_confirmation_dialog_call(GtkWidget *self,dialog_confirmation_data *data){
     textdomain(template_ui_LocaleName);
-    GtkWidget *dialog = gtk_dialog_new_with_buttons(template_app_information.app_title,GTK_WINDOW(gtk_widget_get_toplevel(self)),GTK_DIALOG_USE_HEADER_BAR,CANCEL_LABEL,GTK_RESPONSE_CANCEL,ACCEPT_LABEL,GTK_RESPONSE_ACCEPT,NULL);
+    GtkWindow *parent = NULL;
+    if (self)
+        parent = GTK_WINDOW(gtk_widget_get_toplevel(self));
+    GtkWidget *dialog = gtk_dialog_new_with_buttons(template_app_information.app_title,parent,GTK_DIALOG_USE_HEADER_BAR,CANCEL_LABEL,GTK_RESPONSE_CANCEL,ACCEPT_LABEL,GTK_RESPONSE_ACCEPT,NULL);
     textdomain(template_app_information.app_locale);
     gtk_window_set_modal(GTK_WINDOW(dialog),1);
     gtk_window_set_icon_name(GTK_WINDOW(dialog),yon_char_append("com.ublinux.",template_app_information.app_tech_name));