setDuplex: set tx->dialog to NULL after it has been destroyed

diff --git a/radio_menu.c b/radio_menu.c
index 8145b7df28562d78aaaecf3318393ae2ede395b1..0cec40a06b0a5dc64444a0ddea06b73926ec9b52 100644 (file)
--- a/radio_menu.c
+++ b/radio_menu.c
@@ -229,6 +229,7 @@ void setDuplex() {
     GtkWidget *content=gtk_dialog_get_content_area(GTK_DIALOG(transmitter->dialog));
     gtk_container_remove(GTK_CONTAINER(content),transmitter->panel);
     gtk_widget_destroy(transmitter->dialog);
+    transmitter->dialog=NULL;
     reconfigure_transmitter(transmitter,display_width,rx_height);
   }
   g_idle_add(ext_vfo_update, NULL);