squash -Wunused-parameter warnings in open_graph_clicked

diff --git a/cmd/smyrna/gui/callbacks.c b/cmd/smyrna/gui/callbacks.c
index 6177366948d5afd11f13f1716959f74ddc67deaa..a42c4ac69f7da40ea0ee043561fd3b5e9e638e9c 100644 (file)
--- a/cmd/smyrna/gui/callbacks.c
+++ b/cmd/smyrna/gui/callbacks.c
@@ -28,7 +28,8 @@ void new_graph_clicked(GtkWidget * widget, gpointer user_data)
 
 void open_graph_clicked(GtkWidget * widget, gpointer user_data)
 {
-
+    (void)widget;
+    (void)user_data;
 }
 void save_graph_clicked(GtkWidget * widget, gpointer user_data)
 {