MDL-56959 output: Prevent notice when csstreepostprocess is undefined

2016-11-18 15:47:32 +08:00
parent cb3f67364d
commit 755b013fdf
1 changed files with 1 additions and 1 deletions
@@ -2232,7 +2232,7 @@ class theme_config {
    public function get_css_tree_post_processor() {
        $configs = [$this] + $this->parent_configs;
        foreach ($configs as $config) {
-            if ($config->csstreepostprocessor && is_callable($config->csstreepostprocessor)) {
+            if (!empty($config->csstreepostprocessor) && is_callable($config->csstreepostprocessor)) {
                return $config->csstreepostprocessor;
            }
        }