Merge pull request #1022 from notmasteryet/tree-53

Fixes this.xref.trailer.get("ID")[0] is undefined

src/core.js

@@ -539,13 +539,15 @@ var PDFDocModel = (function PDFDocModelClosure() {
     },
     setup: function pdfDocSetup(ownerPassword, userPassword) {
       this.checkHeader();
-      this.xref = new XRef(this.stream,
-                           this.startXRef,
-                           this.mainXRefEntriesOffset);
-      this.catalog = new Catalog(this.xref);
-      if (this.xref.trailer && this.xref.trailer.has('ID')) {
+      var xref = new XRef(this.stream,
+                          this.startXRef,
+                          this.mainXRefEntriesOffset);
+      this.xref = xref;
+      this.catalog = new Catalog(xref);
+      if (xref.trailer && xref.trailer.has('ID')) {
         var fileID = '';
-        this.xref.trailer.get('ID')[0].split('').forEach(function(el) {
+        var id = xref.fetchIfRef(xref.trailer.get('ID'))[0];
+        id.split('').forEach(function(el) {
           fileID += Number(el.charCodeAt(0)).toString(16);
         });
         this.fileID = fileID;

test/pdfs/ocs.pdf.link

@@ -0,0 +1 @@
+http://www.unibuc.ro/uploads_en/29535/10/Cyrillic_Alphabets-Chars.pdf

test/test_manifest.json

@@ -382,6 +382,13 @@
       "rounds": 1,
       "type": "eq"
     },
+    {  "id": "ocs",
+      "file": "pdfs/ocs.pdf",
+      "md5": "2ade57e954ae7632749cf328daeaa7a8",
+      "rounds": 1,
+      "link": true,
+      "type": "load"
+    },
     {  "id": "issue1015",
       "file": "pdfs/issue1015.pdf",
       "md5": "b61503d1b445742b665212866afb60e2",