Fix some code smells

Emby.Server.Implementations/Session/SessionWebSocketListener.cs

@@ -269,7 +269,7 @@ namespace Emby.Server.Implementations.Session
 
             if (inactive.Any())
             {
-                _logger.LogInformation("Sending ForceKeepAlive message to {0} inactive WebSockets.", inactive.Count());
+                _logger.LogInformation("Sending ForceKeepAlive message to {0} inactive WebSockets.", inactive.Count);
             }
 
             foreach (var webSocket in inactive)
@@ -289,7 +289,7 @@ namespace Emby.Server.Implementations.Session
             {
                 if (lost.Any())
                 {
-                    _logger.LogInformation("Lost {0} WebSockets.", lost.Count());
+                    _logger.LogInformation("Lost {0} WebSockets.", lost.Count);
                     foreach (var webSocket in lost)
                     {
                         // TODO: handle session relative to the lost webSocket

MediaBrowser.Api/SyncPlay/SyncPlayService.cs

@@ -182,13 +182,10 @@ namespace MediaBrowser.Api.SyncPlay
             }
 
             // Both null and empty strings mean that client isn't playing anything
-            if (!String.IsNullOrEmpty(request.PlayingItemId))
+            if (!String.IsNullOrEmpty(request.PlayingItemId) && !Guid.TryParse(request.PlayingItemId, out playingItemId))
             {
-                if (!Guid.TryParse(request.PlayingItemId, out playingItemId))
-                {
-                    Logger.LogError("JoinGroup: {0} is not a valid format for PlayingItemId. Ignoring request.", request.PlayingItemId);
-                    return;
-                }
+                Logger.LogError("JoinGroup: {0} is not a valid format for PlayingItemId. Ignoring request.", request.PlayingItemId);
+                return;
             }
 
             var joinRequest = new JoinGroupRequest()
@@ -220,12 +217,9 @@ namespace MediaBrowser.Api.SyncPlay
             var currentSession = GetSession(_sessionContext);
             var filterItemId = Guid.Empty;
 
-            if (!String.IsNullOrEmpty(request.FilterItemId))
+            if (!String.IsNullOrEmpty(request.FilterItemId) && !Guid.TryParse(request.FilterItemId, out filterItemId))
             {
-                if (!Guid.TryParse(request.FilterItemId, out filterItemId))
-                {
-                    Logger.LogWarning("ListGroups: {0} is not a valid format for FilterItemId. Ignoring filter.", request.FilterItemId);
-                }
+                Logger.LogWarning("ListGroups: {0} is not a valid format for FilterItemId. Ignoring filter.", request.FilterItemId);
             }
 
             return _syncPlayManager.ListGroups(currentSession, filterItemId);