Check response status code in classes that extend RssParser

src/NzbDrone.Core/Indexers/Definitions/Headphones/HeadphonesRssParser.cs

@@ -54,6 +54,11 @@ namespace NzbDrone.Core.Indexers.Headphones
 
         protected override bool PreProcess(IndexerResponse indexerResponse)
         {
+            if (indexerResponse.HttpResponse.HasHttpError)
+            {
+                base.PreProcess(indexerResponse);
+            }
+
             var xdoc = LoadXmlDocument(indexerResponse);
 
             CheckError(xdoc, indexerResponse);

src/NzbDrone.Core/Indexers/Definitions/Newznab/NewznabRssParser.cs

@@ -58,6 +58,11 @@ namespace NzbDrone.Core.Indexers.Newznab
 
         protected override bool PreProcess(IndexerResponse indexerResponse)
         {
+            if (indexerResponse.HttpResponse.HasHttpError)
+            {
+                base.PreProcess(indexerResponse);
+            }
+
             var xdoc = LoadXmlDocument(indexerResponse);
 
             CheckError(xdoc, indexerResponse);

src/NzbDrone.Core/Indexers/Definitions/Torznab/TorznabRssParser.cs

@@ -28,6 +28,11 @@ namespace NzbDrone.Core.Indexers.Torznab
 
         protected override bool PreProcess(IndexerResponse indexerResponse)
         {
+            if (indexerResponse.HttpResponse.HasHttpError)
+            {
+                base.PreProcess(indexerResponse);
+            }
+
             var xdoc = LoadXmlDocument(indexerResponse);
             var error = xdoc.Descendants("error").FirstOrDefault();
 

src/NzbDrone.Core/Indexers/EzrssTorrentRssParser.cs

@@ -1,4 +1,4 @@
-using System.Linq;
+using System.Linq;
 using System.Xml.Linq;
 using NzbDrone.Common.Extensions;
 using NzbDrone.Core.Indexers.Exceptions;
@@ -16,6 +16,11 @@ namespace NzbDrone.Core.Indexers
 
         protected override bool PreProcess(IndexerResponse indexerResponse)
         {
+            if (indexerResponse.HttpResponse.HasHttpError)
+            {
+                base.PreProcess(indexerResponse);
+            }
+
             var document = LoadXmlDocument(indexerResponse);
             var items = GetItems(document).ToList();
 
@@ -24,7 +29,7 @@ namespace NzbDrone.Core.Indexers
                 throw new IndexerException(indexerResponse, "No results were found");
             }
 
-            return base.PreProcess(indexerResponse);
+            return true;
         }
 
         protected override long GetSize(XElement item)