[lacatoire]

CURLOPT_PRIVATE is stored on the PHP side only, so curl_easy_reset() does not clear it and a reset handle still returns the old value. Clear it in curl_reset().

To reproduce

$ch = curl_init();
curl_setopt($ch, CURLOPT_PRIVATE, "secret-marker");
curl_reset($ch);
var_dump(curl_getinfo($ch, CURLINFO_PRIVATE));

Before (PHP 8.4.26): string(13) "secret-marker"

After: bool(false)

[Sjord]

#25000