more linting

core/extension.class.php

@@ -92,6 +92,9 @@ abstract class Extension {
 		$this->theme = $this->get_theme_object(get_called_class());
 	}
 
+	/**
+	 * @return boolean
+	 */
 	public function is_live() {
 		global $database;
 		return (

core/util.inc.php

@@ -90,7 +90,7 @@ function sql_escape($input) {
  * Turn all manner of HTML / INI / JS / DB booleans into a PHP one
  *
  * @param mixed $input
- * @return bool
+ * @return boolean
  */
 function bool_escape($input) {
 	/*