Description:
------------
Hi,

There are a bug with PHP 7 (it works with PHP5.4 to 5.6) when there are several calls to the method curl_copy_handle() with several cURL handles.


Test script:
---------------
<?php
//Cause a segmentation fault or a zend_mm_heap corrupted error
$t2 = curl_init();
$t3 = curl_copy_handle($t2);
$t3 = curl_copy_handle($t2);
$t4 = curl_init();
$t3 = curl_copy_handle($t4);
$t5 = curl_init();
$t6 = curl_copy_handle($t5);