From a059f9fcbbdbe1f0e08b9fbd658685ecd1fc0edc Mon Sep 17 00:00:00 2001
From: Xiliang Chen <xlchen1291@gmail.com>
Date: Mon, 14 Sep 2015 10:42:53 +1200
Subject: [PATCH] Fix exception when rotate page without a document

---
 web/pdf_viewer.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/web/pdf_viewer.js b/web/pdf_viewer.js
index c9f7d269f..cec51cf35 100644
--- a/web/pdf_viewer.js
+++ b/web/pdf_viewer.js
@@ -470,6 +470,10 @@ var PDFViewer = (function pdfViewer() {
      */
     scrollPageIntoView: function PDFViewer_scrollPageIntoView(pageNumber,
                                                               dest) {
+      if (!this.pdfDocument) {
+        return;
+      }
+      
       var pageView = this._pages[pageNumber - 1];
 
       if (this.isInPresentationMode) {