Description:
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When using MYSQLI_USE_RESULT, then immediately closing the database, and then attempting to fetch_object() the result will result in a segmentation fault.

PHP does not segfault if using fetch_array() or fetch_assoc().

Test script:
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<?php

$db = new mysqli("127.0.0.1", "root", "root", "test");
$result = $db->query('SELECT 1', MYSQLI_USE_RESULT);
$db->close();
$result->fetch_object();

Expected result:
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An exception or php fatal error that states the database was closed.

Actual result:
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[root@devz user]# /usr/bin/php segfault.php

Warning: mysqli_result::fetch_object(): Error while reading a row in segfault.php on line 15
Segmentation fault