Add page argument to gtk_dial_new_with_range()

Make gain widget page_incr 3dB.

src/window-levels.c

@@ -95,7 +95,7 @@ GtkWidget *create_levels_controls(struct alsa_card *card) {
         count_labels[j] = add_count_label(grid, j);
 
       // create the meter widget and attach to the grid
-      GtkWidget *meter = gtk_dial_new_with_range(-80, 0, 0);
+      GtkWidget *meter = gtk_dial_new_with_range(-80, 0, 0, 0);
       gtk_widget_set_sensitive(meter, FALSE);
       card->meters[meter_num++] = meter;
       gtk_grid_attach(GTK_GRID(grid), meter, j + 1, i + 1, 1, 1);