Fix: Root Folder Downloads check giving errors when RuTorrent is used

src/NzbDrone.Core/Download/DownloadClientInfo.cs

@@ -5,6 +5,11 @@ namespace NzbDrone.Core.Download
 {
     public class DownloadClientInfo
     {
+        public DownloadClientInfo()
+        {
+            OutputRootFolders = new List<OsPath>();
+        }
+
         public bool IsLocalhost { get; set; }
         public List<OsPath> OutputRootFolders { get; set; }
     }

src/NzbDrone.Core/HealthCheck/Checks/RemotePathMappingCheck.cs

@@ -61,8 +61,6 @@ namespace NzbDrone.Core.HealthCheck.Checks
                 {
                     var status = client.GetStatus();
                     var folders = status.OutputRootFolders;
-                    if (folders != null)
-                    {
                     foreach (var folder in folders)
                     {
                         if (!folder.IsValid)
@@ -98,7 +96,6 @@ namespace NzbDrone.Core.HealthCheck.Checks
                         }
                     }
                 }
-                }
                 catch (DownloadClientException ex)
                 {
                     _logger.Debug(ex, "Unable to communicate with {0}", client.Definition.Name);