Fixed memory leak

Zend/zend_execute.h

@@ -200,7 +200,7 @@ static zend_always_inline void zend_vm_stack_free_extra_args(zend_execute_data *
  		zval *p = end + (ZEND_CALL_NUM_ARGS(call) - call->func->op_array.num_args);
 		do {
 			p--;
-			zval_ptr_dtor_nogc(p);
+			i_zval_ptr_dtor(p ZEND_FILE_LINE_CC);
 		} while (p != end);
  	}
 }

ext/standard/tests/serialize/unserialize_mem_leak.phpt

@@ -1,7 +1,5 @@
 --TEST--
 Memleaks if unserialize return a self-referenced array/object
---XFAIL--
-To fix this, we need change zval_ptr_dtor_nogc to zval_ptr_dtor in free_args, but it will introduce slowdown. mark this XFAIL now. we may find better fix later.
 --INI--
 report_memleaks=1
 --FILE--