fix: ListServer Ping not found in WebGL

Assets/Mirror/Examples/ListServer/ListServer.cs

@@ -18,16 +18,19 @@ public class ServerStatus
         public ushort capacity;
 
         public int lastLatency = -1;
+#if !UNITY_WEBGL // Ping isn't known in WebGL builds
         public Ping ping;
-
+#endif
         public ServerStatus(string ip, /*ushort port,*/ string title, ushort players, ushort capacity)
         {
             this.ip = ip;
             //this.port = port;
             this.title = title;
             this.players = players;
             this.capacity = capacity;
+#if !UNITY_WEBGL // Ping isn't known in WebGL builds
             ping = new Ping(ip);
+#endif
         }
     }
 
@@ -201,6 +204,7 @@ void TickClient()
                             Debug.Log("[List Server] Client disconnected.");
                     }
 
+#if !UNITY_WEBGL // Ping isn't known in WebGL builds
                     // ping again if previous ping finished
                     foreach (ServerStatus server in list.Values)
                     {
@@ -210,6 +214,7 @@ void TickClient()
                             server.ping = new Ping(server.ip);
                         }
                     }
+#endif
                 }
                 // otherwise try to connect
                 // (we may have just joined the menu/disconnect from game server)