Fix test after unserialize change

Author: nikic

Zend/tests/bug70253.phpt

@@ -1,17 +1,8 @@
 --TEST--
 Bug #70253 (segfault at _efree () in zend_alloc.c:1389)
---INI--
-memory_limit=2M
---SKIPIF--
-<?php
-$zend_mm_enabled = getenv("USE_ZEND_ALLOC");
-if ($zend_mm_enabled === "0") {
-	die("skip Zend MM disabled");
-}
-?>
 --FILE--
 <?php
 unserialize('a:2:{i:0;O:9:"000000000":10000000');
 ?>
 --EXPECTF--
-Fatal error: Allowed memory size of 2097152 bytes exhausted%s(tried to allocate %d bytes) in %s on line %d
+Notice: unserialize(): Error at offset 33 of 33 bytes in %s on line %d