Filechooser re-opening fix

source/libublsettingsui-gtk3-filechooser.c

@@ -70,6 +70,10 @@ void yon_file_chooser_set_button_label(char *label){
 
 }
 
+void on_file_chooser_exit(GtkWidget *, filechooser_window *){
+    __yon_filechooser_window = NULL;
+}
+
 filechooser_window *yon_file_chooser_window_new(GtkFileChooserAction action){
     if (!__yon_filechooser_window){
         filechooser_window *window = malloc(sizeof(filechooser_window));
@@ -87,6 +91,7 @@ filechooser_window *yon_file_chooser_window_new(GtkFileChooserAction action){
         g_signal_connect(G_OBJECT(window->MainFileChooser),"selection-changed",G_CALLBACK(on_file_chooser_selected),window);
         g_signal_connect(G_OBJECT(window->CancelButton),"clicked",G_CALLBACK(on_file_chooser_cancel),window);
         g_signal_connect(G_OBJECT(window->SaveButton),"clicked",G_CALLBACK(on_file_chooser_accept),window);
+        g_signal_connect(G_OBJECT(window->Window),"destroy",G_CALLBACK(on_file_chooser_exit),window);
         
         gtk_file_chooser_set_action(GTK_FILE_CHOOSER(window->MainFileChooser),action);
         switch(action){