Fixed: (Cardigann) Use correct encoding for search requests

Fixes #496

src/NzbDrone.Core/Indexers/Definitions/Cardigann/Cardigann.cs

@@ -124,6 +124,7 @@ private IndexerDefinition GetDefinition(CardigannMetaDefinition definition)
                 Name = definition.Name,
                 Language = definition.Language,
                 Description = definition.Description,
+                Encoding = Encoding.GetEncoding(definition.Encoding),
                 Implementation = GetType().Name,
                 IndexerUrls = definition.Links.ToArray(),
                 Settings = new CardigannSettings { DefinitionFile = definition.File },

src/NzbDrone.Core/Indexers/Definitions/Cardigann/CardigannRequestGenerator.cs

@@ -3,6 +3,7 @@
 using System.Collections.Specialized;
 using System.Linq;
 using System.Net;
+using System.Text;
 using System.Threading.Tasks;
 using AngleSharp.Html.Dom;
 using AngleSharp.Html.Parser;
@@ -1080,6 +1081,8 @@ private IEnumerable<IndexerRequest> GetRequest(Dictionary<string, object> variab
 
                 var request = new CardigannRequest(requestbuilder.Build(), variables, searchPath);
 
+                request.HttpRequest.Encoding = Encoding.GetEncoding(_definition.Encoding);
+
                 yield return request;
             }
         }

src/NzbDrone.Core/Indexers/HttpIndexerBase.cs

@@ -377,7 +377,7 @@ protected virtual async Task<IndexerResponse> FetchIndexerResponse(IndexerReques
             }
 
             request.HttpRequest.SuppressHttpError = true;
-            request.HttpRequest.Encoding = Encoding;
+            request.HttpRequest.Encoding = request.HttpRequest.Encoding ?? Encoding;
 
             var response = await _httpClient.ExecuteProxiedAsync(request.HttpRequest, Definition);