Fixed: Fix a few compiler warnings

src/NzbDrone.Common/Serializer/Json.cs

@@ -28,7 +28,7 @@ namespace NzbDrone.Common.Serializer
                 ContractResolver = new CamelCasePropertyNamesContractResolver()
             };
 
-            serializerSettings.Converters.Add(new StringEnumConverter { CamelCaseText = true });
+            serializerSettings.Converters.Add(new StringEnumConverter { NamingStrategy = new CamelCaseNamingStrategy() });
             serializerSettings.Converters.Add(new VersionConverter());
             serializerSettings.Converters.Add(new HttpUriConverter());
 

src/NzbDrone.Core/Datastore/Converters/EmbeddedDocumentConverter.cs

@@ -22,7 +22,7 @@ namespace NzbDrone.Core.Datastore.Converters
                 ContractResolver = new CamelCasePropertyNamesContractResolver()
             };
 
-            SerializerSetting.Converters.Add(new StringEnumConverter { CamelCaseText = true });
+            SerializerSetting.Converters.Add(new StringEnumConverter { NamingStrategy = new CamelCaseNamingStrategy() });
             SerializerSetting.Converters.Add(new VersionConverter());
 
             foreach (var converter in converters)

src/NzbDrone.Core/Download/Clients/Hadouken/HadoukenProxy.cs

@@ -21,7 +21,6 @@ namespace NzbDrone.Core.Download.Clients.Hadouken
 
     public class HadoukenProxy : IHadoukenProxy
     {
-        private static int _callId;
         private readonly IHttpClient _httpClient;
         private readonly Logger _logger;