<!--- To assist in resolving your issue, provide as much information as possible. -->

### Environment
<!--- Describe your Vim/NERDTree setup. -->

* Operating System: 
* Vim version `:version`: 
* NERDTree version `git rev-parse --short HEAD`: 
* NERDTree settings applied in your vimrc, if any:
    ```vim
    ```

### Process
<!--- List the steps that will recreate the issue. -->

1. 

### Current Result
<!--- Describe what you you currently experience from this process. -->

### Expected Result
<!--- Describe what you would have expected from this process. -->

### Screenshot(s)

### Possible Fix
<!--- If you have explored the code, share what you've found. -->