Fixed bug #66356 (Heap Overflow Vulnerability in imagecrop())

And also fixed the bug: arguments are altered after some calls
PHP_FUNCTION(imagecreatefromwebp)
{
	_php_image_create_from(INTERNAL_FUNCTION_PARAM_PASSTHRU, PHP_GDIMG_TYPE_WEBP, "WEBP", gdImageCreateFromWebp, gdImageCreateFromWebpCtx);
}

PHP_FUNCTION(imagecreatefromwebp)
{
	_php_image_create_from(INTERNAL_FUNCTION_PARAM_PASSTHRU, PHP_GDIMG_TYPE_WEBP, "WEBP", gdImageCreateFromWebp, gdImageCreateFromWebpCtx);
}
