Fixed: SABnzbd queue checking will not fail when items in queue are being repaired.

SabQueue priority is parsed with a custom converter to prevent blowing up because SAB decides to use Repair as a queue priority type.

NzbDrone.Core/Helpers/SabnzbdPriorityTypeConverter.cs

@@ -0,0 +1,33 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using Newtonsoft.Json;
+using NzbDrone.Core.Model.Sabnzbd;
+
+namespace NzbDrone.Core.Helpers
+{
+    public class SabnzbdPriorityTypeConverter : JsonConverter
+    {
+        public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
+        {
+            var priorityType = (SabPriorityType)value;
+                writer.WriteValue(priorityType.ToString());
+        }
+
+        public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
+        {
+            var queuePriority = reader.Value.ToString();
+
+            SabPriorityType output;
+            Enum.TryParse(queuePriority, out output);
+
+            return output;
+        }
+
+        public override bool CanConvert(Type objectType)
+        {
+            return objectType == typeof(SabPriorityType);
+        }
+    }
+}