Fixed custom config saving status messages

source/libublsettingsui-gtk3-save.c

@@ -501,6 +501,7 @@ template_saving_window *yon_save_proceed(char *path,YON_CONFIG_TYPE type, ...){
 
     if (!path&&type == YON_CONFIG_CUSTOM){
         path = yon_custom_config_init();
+        if (!path) return NULL;
     } 
 
     va_list args;