Fix broker disposing client

PlantBox.Broker/TcpManager.cs

@@ -51,10 +51,10 @@ namespace PlantBox.Broker
         }
 
         private void ClientLoop(TcpClient client)
-        {
-            using (var commandStream = new CommandStream(client.GetStream()))
         {
             try
+            {
+                using (var commandStream = new CommandStream(client.GetStream()))
                 {
                     while (client.Connected)
                     {
@@ -79,12 +79,14 @@ namespace PlantBox.Broker
                         }
                     }
                 }
+
+                client.Close();
+            }
             catch (Exception ex)
             {
                 Log($"Client disconnected: {ex.Message}");
             }
         }
-        }
 
         protected void Log(string message)
         {