Bug: add_file_dialog segfault on ubuntu

## Version of Dear PyGui

Version: DPG 0.8.38
Operating System: 5.4.0-77-generic #86~18.04.1-Ubuntu SMP Fri Jun 18 01:23:22 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux, Ubuntu 18.04.5 LTS

Python 3.8.0 (default, Feb 25 2021, 22:10:10), [GCC 8.4.0] on linux

## Bug

DPG SegFaults when clicking the username/user home button along the top, within the file explorer widget. In this instance, drwx.

## To Reproduce

Steps to reproduce the behavior:
1. Run provided code
2. Click on your username "drwx", in my screenshot.
3. Segfault?

## Expected behavior

Expected behaviour was for the window to display files within my home directory.

## Screenshots/Video


## Standalone, minimal, complete and verifiable example

```
import dearpygui.dearpygui as dpg

with dpg.window():
dpg.add_file_dialog()
dpg.start_dearpygui()

```