When calling unset(), it is unnecessary to immediately precede it with a call to isset().

See #32444.

Built from https://develop.svn.wordpress.org/trunk@32545


git-svn-id: http://core.svn.wordpress.org/trunk@32515 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/class-wp-walker.php

@@ -408,9 +408,7 @@ class Walker {
 			foreach ( (array) $children_elements[$id] as $child )
 				$this->unset_children( $child, $children_elements );
 
-		if ( isset($children_elements[$id]) )
-			unset( $children_elements[$id] );
-
+		unset( $children_elements[ $id ] );
 	}
 
 } // Walker