Fixed crash bug on PHP 8.1.

Author: cubiclesoft

web_server.php

@@ -723,6 +723,9 @@ public function Wait($timeout = false, $readfps = array(), $writefps = array(),
 					{
 						if ($client->requests)  $result["removed"][$id] = array("result" => $result2, "client" => $client);
 
+						// Client was closed by the underlying library.
+						$client->fp = false;
+
 						$this->RemoveClient($id);
 					}
 					else if ($client->requestcomplete === false && $client->httpstate["state"] !== "request_line" && $client->httpstate["state"] !== "headers")
@@ -845,6 +848,9 @@ public function Wait($timeout = false, $readfps = array(), $writefps = array(),
 
 						$result["removed"][$id] = array("result" => $result2, "client" => $client);
 
+						// Client was closed by the underlying library.
+						$client->fp = false;
+
 						$this->RemoveClient($id);
 					}
 				}