PHP 7 compatibility: Fix variable interpolation in ImageGalleryBase.php

Bug: T115249
Change-Id: I772553cbddad4aa9296ad88877426e31b3d38bbb

diff --git a/includes/gallery/ImageGalleryBase.php b/includes/gallery/ImageGalleryBase.php
index c89c6b6..9ea9702 100644 (file)
--- a/includes/gallery/ImageGalleryBase.php
+++ b/includes/gallery/ImageGalleryBase.php
@@ -98,7 +98,8 @@ abstract class ImageGalleryBase extends ContextSource {
                $mode = $wgContLang->lc( $mode );
 
                if ( isset( self::$modeMapping[$mode] ) ) {
-                       return new self::$modeMapping[$mode]( $mode, $context );
+                       $class = self::$modeMapping[$mode];
+                       return new $class( $mode, $context );
                } else {
                        throw new MWException( "No gallery class registered for mode $mode" );
                }