Public Themes B: PHP Rector fixes (#7383)

button-2/inc/template-tags.php

@@ -100,7 +100,7 @@ function button_2_categorized_blog() {
 		) );
 
 		// Count the number of categories that are attached to the posts.
-		$all_the_cool_cats = count( $all_the_cool_cats );
+		$all_the_cool_cats = is_countable( $all_the_cool_cats ) ? count( $all_the_cool_cats ) : 0;
 
 		set_transient( 'button_2_categories', $all_the_cool_cats );
 	}