Don't use isset() to check for null

diff --git a/skins/Vector.php b/skins/Vector.php
index be1404f..9b09ca3 100644 (file)
--- a/skins/Vector.php
+++ b/skins/Vector.php
@@ -288,7 +288,7 @@ class VectorTemplate extends BaseTemplate {
        }
 
        private function renderPortal( $name, $content, $msg = null, $hook = null ) {
-               if ( !isset( $msg ) ) {
+               if ( $msg === null ) {
                        $msg = $name;
                }
                ?>
@@ -304,7 +304,7 @@ class VectorTemplate extends BaseTemplate {
 
 <?php
                        endforeach;
-                       if ( isset( $hook ) ) {
+                       if ( $hook !== null ) {
                                wfRunHooks( $hook, array( &$this ) );
                        }
                        ?>