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-rw-r--r--includes/ContentSecurityPolicy.php2
1 files changed, 1 insertions, 1 deletions
diff --git a/includes/ContentSecurityPolicy.php b/includes/ContentSecurityPolicy.php
index 05fe82b7c969..d9d906dbe6a5 100644
--- a/includes/ContentSecurityPolicy.php
+++ b/includes/ContentSecurityPolicy.php
@@ -410,7 +410,7 @@ class ContentSecurityPolicy {
// img-src unspecified they should be in default-src. Similarly,
// the DescriptionStylesheetUrl only needs to be in style-src
// (or default-src if style-src unspecified).
- $callback = function ( $repo, &$urls ) {
+ $callback = static function ( $repo, &$urls ) {
$urls[] = $repo->getZoneUrl( 'public' );
$urls[] = $repo->getZoneUrl( 'transcoded' );
$urls[] = $repo->getZoneUrl( 'thumb' );