Fixed empty config restoring

source/ubinstall-gtk-saving.c

@@ -444,12 +444,14 @@ void yon_config_restore(main_window *){
     yon_launch(yon_debug_output("%s\n","ubconfig --source system remove [autoinstall]"));
     yon_config_custom_apply(&main_config.startup_config);
     yon_config_set_status_full(1);
-    int size;
+    int size = 0;
     config_str parameters = yon_config_get_save_parameters(&size);
+    if (size){
         char *command_params = yon_char_parsed_to_string(parameters,size, " ");
         char *command = ubconfig_set_command_full("system","",command_params);
         yon_debug_output("%s\n",command);
         yon_launch(command);
         yon_char_parsed_free(parameters,size);
         free(command);
+    }
 }