Fatal Error: Cannot use object of type Closure as array

Hello,

I have been facing a fatal error in the last 3 updates of Polylang (since version 2.1.2). I know how to fix it, but I have to do the fix every time I update the plugin.

The error message is : “Fatal error: Cannot use object of type Closure as array in Path/wp-content/plugins/polylang/frontend/frontend-filters.php on line 231″

In the same file mentioned in the error message above, I changed this
if ( ! isset( $wp_registered_widgets[ $widget ]['callback'][0] ) || ! is_object( $wp_registered_widgets[ $widget ]['callback'][0] ) || ! method_exists( $wp_registered_widgets[ $widget ]['callback'][0], 'get_settings' ) ) {

to this:

if (!is_array($wp_registered_widgets['callback']) || !isset( $wp_registered_widgets[ $widget ]['callback'][0] ) || ! is_object( $wp_registered_widgets[ $widget ]['callback'][0] ) || ! method_exists( $wp_registered_widgets[ $widget ]['callback'][0], 'get_settings' ) ) {

Could you please include this fix in the future releases so that I don’t have to repeat it every time a new version is released.

Thank you!