dsq_can_load filter does not support multiple callbacks

[aaemnnosttv]

Currently, the dsq_can_load does not support multiple callbacks on it as the $script_name will be lost with the first callback that returns anything other that $script_name.

disqus-wordpress-plugin/disqus/public/class-disqus-public.php

Lines 258 to 261 in 2df9eb9

	$site_allows_load = apply_filters( 'dsq_can_load', $script_name );
	if ( is_bool( $site_allows_load ) ) {
	return $site_allows_load;
	}

In order to ensure $script_name is available to all callbacks, it must be passed as a secondary parameter and use the first as the default return value.

E.g.

apply_filters( 'dsq_can_load', true, $script_name )

Unfortunately, this would be a breaking change to the way it is currently.

Is this something the maintainers are aware of?