Fix E_DEPRECATED messages when running against PHP 8.5

Fixes #448

Author: prigaux

source/CAS/Request/CurlMultiRequest.php

@@ -139,7 +139,12 @@ public function send ()
             $buf = curl_multi_getcontent($handles[$i]);
             $request->_storeResponseBody($buf);
             curl_multi_remove_handle($multiHandle, $handles[$i]);
-            curl_close($handles[$i]);
+            if (PHP_VERSION_ID < 80000) {
+                curl_close($handles[$i]);
+            } else {
+                // unreference it => it will be closed
+                unset($handles[$i]);
+            }
         }
 
         curl_multi_close($multiHandle);

source/CAS/Request/CurlRequest.php

@@ -86,7 +86,9 @@ protected function sendRequest ()
 
         }
         // close the CURL session
-        curl_close($ch);
+        if (PHP_VERSION_ID < 80000) {
+            curl_close($ch);
+        }
 
         phpCAS::traceEnd($res);
         return $res;