squash -Wunused-parameter warning in btn_dot_clicked

diff --git a/cmd/smyrna/gui/callbacks.c b/cmd/smyrna/gui/callbacks.c
index d85b92205587fe4bc70618175dbb1963a8bee8e3..f076b90e6a10b47bc7cd1d6d489033f12b95e1b2 100644 (file)
--- a/cmd/smyrna/gui/callbacks.c
+++ b/cmd/smyrna/gui/callbacks.c
@@ -79,6 +79,8 @@ static void btn_clicked(GtkWidget * widget, gvk_layout layout)
 
 void btn_dot_clicked(GtkWidget * widget, gpointer user_data)
 {
+    (void)user_data;
+
     btn_clicked(widget, GVK_DOT);
 }