Auto merge of #12416 - canaltinova:referrer, r=jdm

Implement Document.referrer

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- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [X] These changes fix #12389 (github issue number if applicable).

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1 files changed, 2 insertions, 1 deletions

diff --git a/components/script/dom/xmldocument.rs b/components/script/dom/xmldocument.rs
index b291c912089..52ebce5f55c 100644
--- a/components/script/dom/xmldocument.rs
+++ b/components/script/dom/xmldocument.rs
@@ -41,7 +41,8 @@ impl XMLDocument {
                                               content_type,
                                               last_modified,
                                               source,
-                                              doc_loader),
+                                              doc_loader,
+                                              None),
         }
     }