Handled case where var "outlineDict" was null (in certain PDFs). Handled

case where var "e" was null in "function xRefGetEntry" (in certain PDFs)

src/obj.js

@@ -134,6 +134,7 @@ var Catalog = (function CatalogClosure() {
           while (queue.length > 0) {
             var i = queue.shift();
             var outlineDict = xref.fetch(i.obj);
+			if(outlineDict != null){
 				if (!outlineDict.has('Title'))
 				  error('Invalid outline item');
 				var dest = outlineDict.get('A');
@@ -168,6 +169,7 @@ var Catalog = (function CatalogClosure() {
 			}
           }
         }
+      }
       obj = root.items.length > 0 ? root.items : null;
       return shadow(this, 'documentOutline', obj);
     },
@@ -569,6 +571,8 @@ var XRef = (function XRefClosure() {
     },
     getEntry: function xRefGetEntry(i) {
       var e = this.entries[i];
+	  if(e == null)
+		return null;
       return e.free ? null : e; // returns null is the entry is free
     },
     fetchIfRef: function xRefFetchIfRef(obj) {