Merge pull request #5475 from BaronGreenback/SSDPFix

(cherry picked from commit baa43c6b41a9b6ac1e6ceab79be4e298f3044d96)
Signed-off-by: Joshua M. Boniface <joshua@boniface.me>

Emby.Dlna/Main/DlnaEntryPoint.cs

@@ -128,7 +128,8 @@ namespace Emby.Dlna.Main
 
             _netConfig = config.GetConfiguration<NetworkConfiguration>("network");
             _disabled = appHost.ListenWithHttps && _netConfig.RequireHttps;
-            if (_disabled)
+
+            if (_disabled && _config.GetDlnaConfiguration().EnableServer)
             {
                 _logger.LogError("The DLNA specification does not support HTTPS.");
             }

Emby.Dlna/Ssdp/DeviceDiscovery.cs

@@ -69,7 +69,7 @@ namespace Emby.Dlna.Ssdp
         {
             lock (_syncLock)
             {
-                if (_listenerCount > 0 && _deviceLocator == null)
+                if (_listenerCount > 0 && _deviceLocator == null && _commsServer != null)
                 {
                     _deviceLocator = new SsdpDeviceLocator(_commsServer);