fix(client): explicitly unset connection handler to free connection when PHP>8.5

Author: jovanmaric

lib/Tinify/Client.php

@@ -114,6 +114,8 @@ function request($method, $url, $body = NULL) {
                 $headerSize = curl_getinfo($request, CURLINFO_HEADER_SIZE);
                 if (PHP_VERSION_ID < 80000) {
                     curl_close($request);
+                } else {
+                    unset($request);
                 }
 
                 $headers = self::parseHeaders(substr($response, 0, $headerSize));
@@ -144,6 +146,8 @@ function request($method, $url, $body = NULL) {
                 $message = sprintf("%s (#%d)", curl_error($request), curl_errno($request));
                 if (PHP_VERSION_ID < 80000) {
                     curl_close($request);
+                } else {
+                    unset($request);
                 }
                 if ($retries > 0) continue;
                 throw new ConnectionException("Error while connecting: " . $message);