From cf9d87a7d86922c94cf7e1008579f55b39359e57 Mon Sep 17 00:00:00 2001
From: chibidev <chibidev@users.noreply.github.com>
Date: Mon, 26 Jun 2017 19:46:14 +0200
Subject: [PATCH] Bugfix/1471 aggregate exception when fallback (#1504)

* Line endings...

* Fixes an issue when the aggregate doesn't require fallback

Apparently operating on null with LINQ is not safe :)
- This fixes Jackett/Jackett#1471
---
 src/Jackett/Indexers/Meta/BaseMetaIndexer.cs | 21 +++++++++++---------
 1 file changed, 12 insertions(+), 9 deletions(-)

diff --git a/src/Jackett/Indexers/Meta/BaseMetaIndexer.cs b/src/Jackett/Indexers/Meta/BaseMetaIndexer.cs
index c13bcdf79..64e16edbd 100644
--- a/src/Jackett/Indexers/Meta/BaseMetaIndexer.cs
+++ b/src/Jackett/Indexers/Meta/BaseMetaIndexer.cs
@@ -77,15 +77,18 @@ namespace Jackett.Indexers.Meta
                 logger.Error(aggregateTask.Exception, "Error during request in metaindexer " + ID);
             }
 
-            var unorderedResult = tasks.Where(x => x.Status == TaskStatus.RanToCompletion).SelectMany(x => x.Result);
-            var orderedResult = unorderedResult.Where(r => {
-                var normalizedTitles = fallbackTitles.Concat(fallbackTitles.Select(t => t.Replace(' ', '.').Replace(":", ""))).Select(t => t.ToLowerInvariant());
-                foreach (var title in normalizedTitles) {
-                    if (r.Title.ToLowerInvariant().Contains(title))
-                        return true;
-                }
-                return false;
-            }).OrderByDescending(r => r.Gain);
+            var unorderedResult = tasks.Where(x => x.Status == TaskStatus.RanToCompletion).SelectMany(x => x.Result);;
+            if (needFallback) {
+                unorderedResult = unorderedResult.Where (r => {
+                    var normalizedTitles = fallbackTitles.Concat (fallbackTitles.Select (t => t.Replace (' ', '.').Replace (":", ""))).Select (t => t.ToLowerInvariant ());
+                    foreach (var title in normalizedTitles) {
+                        if (r.Title.ToLowerInvariant ().Contains (title))
+                            return true;
+                    }
+                    return false;
+                });
+            }
+            var orderedResult = unorderedResult.OrderByDescending(r => r.Gain);
 
             var filteredResult = orderedResult.Where(r => {
                 if (r.Imdb != null) {