Small improvements in the filtering by attribute lookup table.

- Use 'absint' instead of an '(int)' in an anonymous function.

src/Internal/ProductAttributesLookup/Filterer.php

@@ -74,12 +74,7 @@ class Filterer {
 			$all_terms                  = get_terms( $taxonomy, array( 'hide_empty' => false ) );
 			$term_ids_by_slug           = wp_list_pluck( $all_terms, 'term_id', 'slug' );
 			$term_ids_to_filter_by      = array_values( array_intersect_key( $term_ids_by_slug, array_flip( $data['terms'] ) ) );
-			$term_ids_to_filter_by      = array_map(
-				function( $id ) {
-					return (int) $id;
-				},
-				$term_ids_to_filter_by
-			);
+			$term_ids_to_filter_by      = array_map( 'absint', $term_ids_to_filter_by );
 			$term_ids_to_filter_by_list = '(' . join( ',', $term_ids_to_filter_by ) . ')';
 			$is_and_query               = 'and' === $data['query_type'];