Description:
------------
PECL xdiff Windows x64 build obtainable at
https://pecl.php.net/package/xdiff/2.0.1/windows
does not function correctly.
The DLL itself loads fine but xdiff_* functions does not produce the correct data, and sometimes PHP process stops possibly inside the DLL execution.
I've tried x64 NTS build for PHP 7.0 through 7.3 but the result was the same, while x86 NTS for PHP 7.3 works fine.

Steps to reproduce:
1.Expand php-7.3.2-nts-Win32-VC15-x64.zip
2.Rename php.ini-development to php.ini
3 Copy php_xdiff.dll in php_xdiff-2.0.1-7.3-nts-vc15-x64.zip to ext/
4.Append "extension=ext/php_xdiff" to the end of php.ini
5.Run the test script

Test script:
---------------
<?php
$old = 'test';
$new = 'test2';
print bin2hex($new) . "\n";
$diff = xdiff_string_rabdiff($old, $new);
print bin2hex($diff) . "\n";
print bin2hex(xdiff_string_bpatch($old, $diff)) . "\n";

Expected result:
----------------
7465737432
c00159040400000001057465737432
7465737432

Actual result:
--------------
7465737432
c0015904040000000105
00009858c6 // this line may vary each time