RAR is enabled but error

Hi! Very useful plugin! Thanks for it. But I have an error when try to upload RAR-file (RAR is enabled in admin):

ERROR: File you upload must be valid file type
(jpg, gif, png, pdf, doc, docx, ppt, pptx, pps,
ppsx, odt, xls, xlsx, rar, zip), and under 100MB(s)!

I did some code analys and figured out that “finfo_file” in my case (php 5.4.32) return ‘application/x-rar’ instead of existing in plugin code ‘application/x-rar-compressed’ or in wordpress code ‘application/rar’.

So, I add some fix in plugin code in comment-attachment-init.php instead of line 331:

$this->adminPrefix . 'RAR'=> 'application/x-rar-compressed',

I add:

$this->adminPrefix . 'RAR'=> array(
    'application/x-rar-compressed',
    'application/x-rar'),

This fixed the problem. So, I decided to note about it here to help author to improve this very useful and unique plugin (I can’t find analog).

https://wordpress.org/plugins/comment-attachment/