add tuner error handling

MediaBrowser.Server.Implementations/LiveTv/TunerHosts/BaseTunerHost.cs

@@ -106,6 +106,8 @@ namespace MediaBrowser.Server.Implementations.LiveTv.TunerHosts
                 var hostsWithChannel = new List<TunerHostInfo>();
 
                 foreach (var host in hosts)
+                {
+                    try
                     {
                         var channels = await GetChannels(host, true, cancellationToken).ConfigureAwait(false);
 
@@ -114,6 +116,11 @@ namespace MediaBrowser.Server.Implementations.LiveTv.TunerHosts
                             hostsWithChannel.Add(host);
                         }
                     }
+                    catch (Exception ex)
+                    {
+                        Logger.Error("Error getting channels", ex);
+                    }
+                }
 
                 foreach (var host in hostsWithChannel)
                 {
@@ -171,6 +178,8 @@ namespace MediaBrowser.Server.Implementations.LiveTv.TunerHosts
                 foreach (var host in hosts)
                 {
                     if (string.IsNullOrWhiteSpace(streamId))
+                    {
+                        try
                         {
                             var channels = await GetChannels(host, true, cancellationToken).ConfigureAwait(false);
 
@@ -179,6 +188,11 @@ namespace MediaBrowser.Server.Implementations.LiveTv.TunerHosts
                                 hostsWithChannel.Add(host);
                             }
                         }
+                        catch (Exception ex)
+                        {
+                            Logger.Error("Error getting channels", ex);
+                        }
+                    }
                     else if (streamId.StartsWith(host.Id, StringComparison.OrdinalIgnoreCase))
                     {
                         hostsWithChannel = new List<TunerHostInfo> { host };