Fixed: Newznab book search type

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

@@ -96,8 +96,8 @@ namespace NzbDrone.Core.Indexers.Cardigann
 
             var variables = GetQueryVariableDefaults(searchCriteria);
 
-            variables[".Query.Author"] = null;
+            variables[".Query.Author"] = searchCriteria.Author;
-            variables[".Query.Title"] = null;
+            variables[".Query.Title"] = searchCriteria.Title;
 
             pageableRequests.Add(GetRequest(variables));
 
@@ -183,6 +183,11 @@ namespace NzbDrone.Core.Indexers.Cardigann
                     SuppressHttpError = true
                 };
 
+                foreach (var pair in pairs)
+                {
+                    requestBuilder.AddFormParameter(pair.Key, pair.Value);
+                }
+
                 requestBuilder.Headers.Add("Referer", SiteLink);
 
                 var response = HttpClient.Execute(requestBuilder.Build());