CSS problem

Hello.

When I activated this plugin, the CSS of my web has been broken.
The problem are in moderation-tools-bbpress.php, line 126:

wp_enqueue_style( $this->slug . '-css', plugin_dir_url( __FILE__ ) . '/css/bbp-moderation-tools.css' );

The function ‘plugin_dir_url()’ write a ‘/’, the plugin write another ‘/’, and de result have ‘//’.

At line 136 it is the same.

The real problem is when I active minify. The css give a 404 error because have ‘//’.

I have had to modify the plugin so that it does not fail, but it would be nice that in some update this will be fixed.

Thanks!

PD: Sorry for my bad english.