From a7b7cec2e75a749bcc4dce864a306b8bd5b7ff58 Mon Sep 17 00:00:00 2001
From: Jonas Jenwald <jonas.jenwald@gmail.com>
Date: Sat, 25 Jul 2026 11:59:25 +0200
Subject: [PATCH] Re-factor the "nested trailer dictionary" check (PR 4731
 follow-up)

In the `pr4731.pdf` document the trailer is actually a Stream, rather than the expected Dictionary, hence update the "nested trailer dictionary" check to make that clearer.

*Note:* This is something that I happened to noticed while working on the previous patch.
---
 src/core/xref.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/core/xref.js b/src/core/xref.js
index 4954a14b4..adcadde48 100644
--- a/src/core/xref.js
+++ b/src/core/xref.js
@@ -214,7 +214,7 @@ class XRef {
     let dict = parser.getObj();
 
     // The pdflib PDF generator can generate a nested trailer dictionary
-    if (!(dict instanceof Dict) && dict.dict) {
+    if (dict instanceof BaseStream) {
       dict = dict.dict;
     }
     if (!(dict instanceof Dict)) {